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U.S. Route 1 north - Baltimore to Pennsylvania line

U.S. Route 1 forges northward toward the community of Perry Hall in eastern Baltimore County, just past its intersection with Silver Spring Road. Photo taken 01-14-2022.

Known here as Belair Road, a name it takes from the intersection of North Avenue in east-central Baltimore to just outside of its namesake town of Bel Air in Harford County, US 1 runs mostly straight through the Perry Hall area, but with several changes in elevation and commercial development galore. Photo taken 01-14-2022.

After intersecting several side streets, the route encounters the Perry Hall Centre which has its own traffic light at its main entrance. Photo taken 01-14-2022.

Belair Road then encounters the end of the western leg of Joppa Road, which heads toward county seat Towson via Parkville, and a disjoint segment of Ebenezer Road, whose name reappears to the southeast in Middle River off U.S. Route 40. Photo taken 01-14-2022.

Just north of that sits a light at India Avenue, a residential street, and the beginning of East Joppa Road, which one can take to Maryland Route 7 outside of White Marsh. Photo taken 01-14-2022.

US 1 now passes through a highly residential section of Perry Hall. Due to the lack of shoulders, mailboxes here are positioned sideways on the sidewalk, just like on Silver Spring Road nearby. Photo taken 01-14-2022.

The speed limit is 40 miles per hour as a signal for Perry Hall's fire station sits ahead. Photo taken 01-14-2022.

A "new" traffic light (SHA has a history of forgetting to take these signs down) sits at a retail area in the distance. Photo taken 01-14-2022.

The light sits at Klausmier Road, and sits just past the garage of the Klausmeier family, one of whose members, Johnny, has been a crew chief for a NASCAR team co-owned by Tony Stewart. Photo taken 01-14-2022.

The route's center left-turn lane lingers, and it now approaches a light at Baker Lane and Chapel Road. Photo taken 01-14-2022.

Baker Lane leads toward Gunpowder Elementary School, while Chapel Road goes back in the direction of East Joppa Road, which intersects Honeygo Boulevard just east of that. Photo taken 01-14-2022.

US 1 reassurance sits just past that signal, at a separate light serving the Perry Hall North retail strip. Photo taken 01-14-2022.

The route subsequently intersects a now-disconnected stub of Forge Road, which was severed by Honeygo's construction. Photo taken 01-14-2022.

The north end of Honeygo Boulevard is US 1's final traffic light in the Perry Hall hub. Honeygo's extension from Ebenezer Road outside of White Marsh was completed in 2010. Photo taken 01-14-2022.

As it curves and descends into a heavily forested area, US 1 intersects Perry Hall Road, which was extended in 2016 to facilitate construction of the Gunpowder Overlook subdivision. Photo taken 01-14-2022.

The median temporarily disappears as the route approaches Miller Road. Photo taken 01-14-2022.

US 1 now becomes a divided highway as a rock formation sits next to the right side of the highway. Photo taken 01-14-2022.

It then approaches a crossing of Gunpowder Falls and a Gunpowder Falls State Park trailhead. Photo taken 01-14-2022.

The road now prepares to consolidate back into a two-way trafficway. Photo taken 01-14-2022.

A traffic light with Mount Vista Road sits just ahead, after a slight curve and uphill climb. Photo taken 01-14-2022.

K.P. Huber's produce stand on the north side of the signal gives this intersection a rural touch. Photo taken 01-14-2022.

The route continues north, still at 50 miles per hour. Photo taken 01-14-2022.

As it approaches Kingsville, the speed drops to 40 miles per hour. Photo taken 01-14-2022.

The highway intersects Cheryl Avenue as it enters the Kingsville hub. Photo taken 01-14-2022.

The speed limit drops as the route goes slightly uphill. Photo taken 01-14-2022.

The route passes by a car dealership in between intersections with Longfield Drive and Goettner Road. Photo taken 01-14-2022.

As it heads into Kingsville's center, US 1 passes by the Kingsville Plaza shopping center. It then comes up on intersections with Jerusalem Road as well as Sunshine Avenue to the left and Bradshaw Road to the right.  Photo taken 01-14-2022.

At the light ahead, Jerusalem Road heads toward the historic Jerusalem Mill and a Gunpowder Falls trailhead, indirectly to the Jericho covered bridge, and out to Maryland Route 152 in Harford County. Sunshine Avenue becomes Fork Road at Maryland Route 147; Fork Road in turn becomes Baldwin Mill Road, which assumes State Highway Administration maintenance as Maryland Route 165 just north of Baldwin. Bradshaw Road meanwhile passes through the hamlet of Upper Falls, crosses Interstate 95 and dead-ends past Maryland Route 7. From US 1 north, Sunshine is only accessible through a right turn onto Jerusalem and then left on Bradshaw back to the US 1 light. Photo taken 01-14-2022.

Kingsville light behind it, US 1 forges northeast toward its next big hub, Bel Air. Photo taken 01-14-2022.

After a short uphill, the route descends slightly. Photo taken 01-14-2022.

As it passes the Kings Court Motel, the speed limit remains 40 for the time being. Photo taken 01-14-2022.

The speed has now increased back to 50, with houses lining either side of the highway. Photo taken 01-14-2022.

An intersection with New Cut Road approaches; its position along the highway is tricky enough for it to be announced by this overhead mast-mounted sign with flashers. Photo taken 01-14-2022.

Past New Cut Road, US 1 proceeds sharply downhill into trees, marking another portion of Gunpowder Falls State Park. Photo taken 01-14-2022.

The route has a slight S-curve near the bottom of the hill. Photo taken 01-14-2022.

At the bottom of the hill, the highway comes across the head of the Little Gunpowder trail. Photo taken 01-14-2022.

US 1 now prepares to cross the Little Gunpowder Falls into Harford County. Photo taken 01-14-2022.

A moderate uphill curve follows the bridge; slower traffic is directed to remain in the right lane. Photo taken 01-14-2022.

Harford County's first US 1 reassurance. Photo taken 01-14-2022.

A crossroads with Reckord Road approaches, at which the safe speed is 40. Photo taken 01-14-2022.

The Reckord intersection is augmented by a set of flashers, which was erected around 2006. Photo taken 01-14-2022.

The route then intersects Wilgis Road, leading into the community of Pleasant Hills, at the site of Log Cabin Candies' facility. Photo taken 01-14-2022.

US 1 goes uphill as it approaches its intersection with Maryland Route 152. Photo taken 01-14-2022.

Monkton's Ladew Gardens are a drive several miles leftward; meanwhile Jerusalem Mill and its accompanying historic village can again be reached by backtracking onto MD 152 south. A center cable barrier is present here. Photo taken 01-14-2022.

MD 152 goes north through the sprawling residential area of Fallston to MD 146 south of Madonna, which is west of Jarrettsville. MD 152 also goes south to I-95, intersecting US 40 outside of Joppatowne, and to the western entrance of Aberdeen Proving Ground's Edgewood Arsenal. Photo taken 01-14-2022.

US 1 reassurance follows the MD 152 light it is now in a busy commercial area that represents the south side of Fallston. Photo taken 01-14-2022.

The route has a flashing intersection with Milton Avenue, which used to serve the Fallston General Hospital. It was replaced with Bel Air's Upper Chesapeake Medical Center in 2000, and the "Hospital" arrow on the flashers now points straight to reflect this. Photo taken 01-14-2022.

The next light, Fallston Boulevard, serves a Walmart and a residential community. Several car dealerships also line this section of the highway. Photo taken 01-14-2022.

After going downhill and a curve to the left, US 1 intersects Connolly Road to the left, leading to the Benson post office, and Whitaker Mill Road right. Whitaker Mill has a truss crossing over Winters Run and becomes Ring Factory Road, serving subdivisions on the south side of Bel Air. Photo taken 01-14-2022.

US 1 now approaches a signal intersecting the north end of Maryland Route 147 (Harford Road) and the south end of U.S. Route 1 Business, which assumes the Belair Road name at the intersection. Photo taken 01-14-2022.

The markers for each intersecting route sit here. Photo taken 01-14-2022.

The route has reached the intersection in question. MD 147 heads south back toward and into the city of Baltimore. US 1 Business, shown here with a green-on-white marker, used to be mainline US 1's path into downtown Bel Air until the mid-1960s, when the Bel Air Bypass opened. Photo taken 01-14-2022.

The names of each intersecting road are displayed on the signal mast. US 1 now becomes the Bel Air Bypass, passing to the west of the center of Bel Air, the seat of Harford County. Photo taken 01-14-2022.

US 1 reassurance flanks the route as it expands into a four-lane divided highway, initially with a concrete median, which shortly turns into a grassy one. Photo taken 01-14-2022.

Rising Sun in the northern part of neighboring Cecil County is 27 miles from this sign. Downtown Philadelphia, Pennsylvania is an 81-mile drive away, the entire distance from this point covered by US 1. Photo taken 01-14-2022.

The speed limit is now 50 miles per hour. Photo taken 01-14-2022.

The excess asphalt in the median here is a ramp stub from when US 1 was planned to be a full freeway the entire way between Baltimore and Philadelphia. The ramp was planned to be part of a partial interchange between the freeway and Belair Road, which mainline US 1 would have run separate from had the freeway been built in its entirety. Portions of this freeway that did end up being built, in addition to the Bel Air Bypass, include part of the Perring Parkway (Maryland Route 41) in northeast Baltimore and Parkville, as well as US 1's Kennett Oxford Bypass in Chester County, Pennsylvania. Photo taken 01-14-2022.

The Bel Air Bypass is one of Maryland's designated headlight use corridors; this was once of the safety enhancement efforts put in place in the wake of a November 2008 fatal accident on the bypass about two miles north of this. Photo taken 01-14-2022.

The right lane ends ahead as US 1 prepares to converge back into a two-lane undivided trafficway. Photo taken 01-14-2022.

As the right lane ends, a sign announces a forthcoming exit ramp from the bypass to southbound Maryland Route 24, leading a few miles southward to Interstate 95 and the Edgewood area. Photo taken 01-14-2022.

While the southbound lane remains a straight shot here, the northbound carriageway curves considerably to the left as the divided highway ends. Photo taken 01-14-2022.

Now a single carriageway, US 1 crosses over Winters Run, which as Otter Point Creek further south, is a tributary of the Bush River. Photo taken 01-14-2022.

The southbound MD 24 exit is a quarter of a mile away. Photo taken 01-14-2022.

Before the exit, US 1 climbs up a steep hill, and this brown sign - one of many across Maryland directing travelers to various points of interest across the state - notifies that Rocks State Park in northern Harford County as well as Bel Air's historic landmarks can be accessed via the next interchange, just further to the north. Maryland Route 924, explained a few photos down, is marked for the first time on the bypass here. Photo taken 01-14-2022.

After crossing over Tollgate Road, a second northbound lane opens up for the MD 24 exit ramp. This ramp is part of an uncoventional interchange that opened in 1987 along with the current MD 24 corridor from here to I-95; it includes a traffic signal between ramps covered below. The Upper Chesapeake hospital is noted toward the bottom of the gantry pole, and by now, mile markers reflecting US 1's distance from the Baltimore County line have begun to line the highway; mile marker 4 sits just beyond the gantry. Photo taken 01-14-2022.

The ramp to MD 24 south leaves US 1, and the second northbound lane lingers until just past the forthcoming traffic signal. Photo taken 01-14-2022.

US 1 splits back into a divided highway with concrete median as the southbound carriageway's second lane disappears. Photo taken 01-14-2022.

Ahead of the signal, a sign notes that the right lane disappears past the signal. Photo taken 01-14-2022.

The traffic signal is where MD 24 south splits from US 1 south and connects with the above-mentioned ramp from US 1 north into Bel Air's retail district. It is a so-called seagull intersection where traffic continuing on US 1 south rather than turning onto MD 24 south does not have to stop at the light, whereas northbound US 1 traffic does have to deal with the light. The movements from US 1 south to MD 24 south and from MD 24 north to US 1 south cross over each other, and are thus not permitted simultaneously. This intersection is not intended to facilitate movements from MD 24 north to US 1 north, as those are provided by a long exit ramp to the north of here. Photo taken 01-14-2022.

Past the signal, drivers are once again reminded to merge left if they are still in the right lane. This signage has gone through multiple iterations over the years in order to keep up with SHA's design guidelines and people's driving patterns. Photo taken 01-14-2022.

The concrete median now becomes a guardrail; this was added in 2012 in response to the aforementioned 2008 accident. Photo taken 01-14-2022.

A forthcoming five-ramp interchange serves Maryland Route 924 south into downtown Bel Air and Maryland Route 24 north toward Forest Hill. Photo taken 01-14-2022.

This stretch of US 1 remains a mandatory headlight use area. While the bypass contains two southbound lanes here in anticipation of the MD 24 signal, US 1 north remains a single lane for now. Photo taken 01-14-2022.

The cross road at the interchange ahead, for both routes, is Rock Spring Road. This sign further explains that it becomes Rocks Road via MD 24 north and Bel Air's Main Street via MD 924 south (in fact, it becomes Rock Spring Avenue beforehand, roughly at Bel Air's corporate limits, a distance north of downtown). Photo taken 01-14-2022.

The long ramp which takes northbound MD 24 traffic onto the bypass becomes visible after US 1 emerges from the woods. The ramp has its own sign informing drivers to turn on their headlights regardless of light or weather condition. Photo taken 01-14-2022.

These signs warn of the impending ramp merge. Photo taken 01-14-2022.

The ramp now becomes a second northbound lane for the bypass, and MD 24 is now fully concurrent with US 1. An advance sign for the exit for MD 924 south sits here, with the Vale Road overpass in the distance. Photo taken 01-14-2022.

A dual US 1/MD 24 route shield sits just past the overpass. Photo taken 01-14-2022.

This brown sign, which the State Highway Administration uses to promote points of interest across Maryland, states that Rocks State Park is an eight-mile drive north on MD 24. Included at the bottom is a pictorial notation for the Fiore winery on Harford County's northern fringes. Photo taken 01-14-2022.

A mounted overhead sign states the MD 924 ramp sits just ahead. MD 924 was MD 24's original alignment through downtown Bel Air before its current divided highway alignment bypassed it in 1987. Photo taken 01-14-2022.

An exit sign and mile marker in the ramp's gore. The onramp from MD 24 south to US 1 south lies just behind. Photo taken 01-14-2022.

The right northbound lane then prepares to become the cloverleaf ramp on which MD 24 north leaves the bypass. That ramp was added in 1983; beforehand, both directions of Rock Spring Road/Avenue were accessed from the previous ramp. Photo taken 01-14-2022.

US 1's 5.8 mile marker for Harford County precedes the exit. Photo taken 01-14-2022.

After US 1 crosses over Rock Spring Road, on a bridge which was paved over with asphalt in 2021 after decades of being concrete-surfaced, MD 24 departs the bypass. This gantry directs drivers staying on US 1 north to keep left. Meanwhile, MD 24 from here goes north through the Forest Hill area and to Rocks State Park. This sign may be referencing the actual hamlet of Rocks on the north side of the park and Deer Creek. Photo taken 01-14-2022.

Just past the MD 24 ramp gore. The northbound ramp to Rock Spring Road is situated just ahead. Photo taken 01-14-2022.

As it passes under a northbound-facing gantry, US 1 is now two lanes, but not for long. Photo taken 01-14-2022.

The onramp from Rock Spring Road to US 1 north now prepares to merge in. Photo taken 01-14-2022.

An intersection with Water Tower Way, which leads north to Maryland Route 23, is a quarter of a mile away. Water Tower Way used to be part of MD 23 itself. That will be explained in greater detail below. Photo taken 01-14-2022.

A MD 23 shield precedes the intersection. When the Bel Air Bypass was first built in the mid-1960s, MD 23, itself on a new alignment, East-West Highway, curved slightly to the south, then east on Granary Road to Conowingo Road, and what is now Water Tower Way was a ramp to US 1. The Hickory Bypass project in 2000 realigned and extended MD 23 eastward to the new bypass. Photo taken 01-14-2022.

US 1's carriageways split and narrow as a left-turn lane for Water Tower Way appears in the median. A ramp from southbound Water Tower Way to southbound US 1 sits behind this photo It was around this point where, prior to 2000, the Bel Air Bypass curved rightward and ended at a traffic signal at Conowingo Road. Photo taken 01-14-2022.

Now changing names to the Hickory Bypass, mainline US 1 prepares to intersect US 1 Business. Before the extension of the bypass, mainline US 1 turned from just south of this point onto Conowingo Road and passed directly through Hickory, and US 1 Business reached its northern terminus at that point. Photo taken 01-14-2022.

US 1 goes straight ahead to Rising Sun, turning left takes you toward Hickory, and turning right back toward downtown Bel Air. Photo taken 01-14-2022.

A green-on-white marker directs drivers to northbound US 1 Business. Photo taken 01-14-2022.

US 1 continues northeastward, now with concrete median; the speed limit is still 50. Photo taken 01-14-2022.

The highway now approaches a junction with Maryland Route 23, which heads west toward Jarrettsville. Photo taken 01-14-2022.

MD 23, known here as East-West Highway, has its eastern terminus here. Just under seven miles long, East-West Highway was built around the same time as the Bel Air Bypass, replacing old MD 23, Jarrettsville Road, to the north. Its current alignment in turn came about with the construction of the Hickory Bypass. Photo taken 01-14-2022.

US 1 then proceeds downhill through woods; the median is once again grassy with a guardrail. Photo taken 01-14-2022.

The highway now approaches a junction with Maryland Route 543, known here as Fountain Green Road. Photo taken 01-14-2022.

MD 543 leads north from here toward Ady, a hamlet in northern Harford County, and south along the eastern edge of the Bel Air area to the namesake Fountain Green, and to Interstate 95 and then U.S. Route 40 in Belcamp-Riverside. Photo taken 01-14-2022.

The MD 543 traffic signal sits in the distance, at the top of a preceding hill. Photo taken 01-14-2022.

There is a US 1 reassurance shield following the MD 543 intersection. Photo taken 08-14-2023.

The right lane ends just ahead, as the Hickory Bypass will shortly end and US 1 will reduce to one lane in each direction. Photo taken 08-14-2023.

The speed limit remains 50 as US 1 consolidates into a single carriageway while curving to the left. Photo taken 08-14-2023.

The route now comes up on the north end of US 1 Business. Photo taken 08-14-2023.

The final bypass mile marker sits just prior to the US 1 Business intersection. Photo taken 08-14-2023.

Taking the Conowingo Road name with it, US 1 proceeds northward away from the Bel Air hub. Photo taken 08-14-2023.

The route nears an intersection with Ruffs Mill Road, which leads southeast to Thomas Run Road. Photo taken 08-14-2023.

It then intersects Waverly Drive, a residential street. Photo taken 08-14-2023.

A scattering of trees and buildings surround the approach to the next intersection, Gibson Road. Photo taken 08-14-2023.

Gibson Road, at left, leads west back to MD 543, with a number of sharp curves leading there. Photo taken 08-14-2023.

After that, US 1 intersects Robertson Road, the main street in Gibson Manor, an older subdivision in the area. Photo taken 08-14-2023.

Passing more farmland, US 1 then reaches White House Road, unrelated to the landmark of Washington, DC. Photo taken 08-14-2023.

More trees and corn surround the highway as it prepares to go down a fairly steep hill. Photo taken 08-14-2023.

Before said hill, US 1 meets at a forked intersection Forge Hill Road, which represents its former, curvier alignment through the Deer Creek valley ahead. Photo taken 08-14-2023.

After a gradual leftward curve, US 1 enters a swath of trees at the top of the hill and prepares to intersects Kalmia Road at a crossroads. Photo taken 08-14-2023.

Kalmia Road goes west from here to Sandy Hook Road, where it becomes Walters Mill Road and begins paralleling Deer Creek; it also goes east to intersections with Forge Hill and White House roads, and out to Thomas Run Road. Photo taken 08-14-2023.

The highway goes back uphill past Kalmia Road, with another cornfield wedged in among the trees at left. Photo taken 08-14-2023.

The route next intersects Allibone Road, a connector between Kalmia and Forge Hill. Photo taken 08-14-2023.

US 1 goes downhill again, with a gradual righthand curve, as it approaches Deer Creek. Photo taken 08-14-2023.

The highway reaches the bottom of the hill and crosses the creek - a tributary of the Susquehanna River and important waterway for Harford County, passing through the Susquehanna and Rocks state parks and numerous stretches of farmland. It is additionally the source of many smaller streams across the county. Photo taken 08-14-2023.

Climbing back uphill, US 1 reaches a sharper curve to the right. Photo taken 08-14-2023.

The route's next intersection is with Sandy Hook and Trappe roads, the latter leading to Maryland Route 136. Photo taken 08-14-2023.

The intersection is situated mid-hill, with Trappe Road immediately having its own steep uphill climb. Photo taken 08-14-2023.

US 1 reaches the top of the hill and flattens out momentarily. Photo taken 08-14-2023.

After one more ascent and curve, the highway will be out of the valley. Photo taken 08-14-2023.

US 1 reaches the other end of Forge Hill Road, and the trees clear out. Photo taken 08-14-2023.

A traffic signal at Maryland Route 136 (Whiteford Road/Priestford Road) is coming up. Photo taken 08-14-2023.

From the intersection ahead, MD 136 leads north to the Whiteford area in the county's north, and south toward Churchville and Creswell. Photo taken 08-14-2023.

Leaving MD 136 behind, US 1 continues northeast. Photo taken 08-14-2023.

The route curves slightly, then prepares to intersect Arena Road. Photo taken 08-14-2023.

As the route then dips downward into some trees, the speed limit is still 50. Photo taken 08-14-2023.

US 1 now approaches a crossroads with Poole Road, one of the residential roads in the Dublin area. Photo taken 08-14-2023.

Poole Road goes northwest back to MD 136, and southeast to Trappe Church Road. Photo taken 08-14-2023.

The route then reaches the other end of Arena Road. Photo taken 08-14-2023.

US 1's next intersection is with Hughes Road. Photo taken 08-14-2023.

A wide curve to the right follows. Photo taken 08-14-2023.

The highway then passes the Emma Rockey Park at left, and the Darlington Meadows mobile home park to the right. Photo taken 08-14-2023.

US 1 now approaches the eastern terminus of Maryland Route 440 (Dublin Road). Photo taken 08-14-2023.

Drivers have to deal with another curve prior to reaching MD 440. Photo taken 08-14-2023.

From here, MD 440 backtracks west to Dublin proper, where it meets MD 136, and out to MD 543 in the Ady area. Photo taken 08-14-2023.

The intersection is located near the end of the curve. Photo taken 08-14-2023.

Subsequently, US 1 straightens out and passes a defunct State Highway Administration building at left. Photo taken 08-14-2023.


The highway curves slightly again, then prepares to intersects Cedar Church Road. Photo taken 08-14-2023.


It then comes up on Smith Road, which leads northward to the Glen Cove Marina. Photo taken 08-14-2023.


A ground-level variable message sign is then located at right. Photo taken 08-14-2023.


The next road intersected is Berkley Road, which follows the same path as Smith Road to Glen Cove. Photo taken 08-14-2023.


This is followed by another curve to the right, this one wider than the previous. Photo taken 08-14-2023.


The highway eases downward as a green sign to the right announces an approaching weigh station, which was closed when these photos were taken. Photo taken 08-14-2023.


US 1 now approaches a junction with Maryland Route 161 (Darlington Road). Photo taken 08-14-2023.


As US 1 curves to the left, there is a "TO MD 161" marker, although MD 161 officially begins here. It runs southward through Darlington and out to Maryland Route 155 in the Level area northwest of Havre de Grace, in the process crossing Deer Creek and running just west of Susquehanna State Park. Photo taken 08-14-2023.


Contradicting the previous sign, the next sign for the weigh station states it is open. Photo taken 08-14-2023.


US 1 is now approaching a traffic signal at Maryland Route 623 (Castleton Road). Photo taken 08-14-2023.


As they were at MD 161, Susquehanna State Park and Havre de Grace's historic district are both at right up ahead. Photo taken 08-14-2023.


Despite mostly running north-south in its 7 miles and change, MD 623 is signed east-west. At right, it goes a short distance to an end at MD 161, while in the other direction, it runs parallel to the Susquehanna into Peach Bottom Township, York County in Pennsylvania as Flintville Road. Photo taken 08-14-2023.


A US 1 reassurance shield follows the MD 623 signal, which is the final one in Harford County. Photo taken 08-14-2023.


The weigh station is ahead at left. Photo taken 08-14-2023.


US 1 will now dip sharply downward, then back uphill as it makes its approach to the Conowingo Dam. Photo taken 08-14-2023.


The hillcrest can be seen feet ahead. Photo taken 08-14-2023.


The right lane that formed for slow traffic along the hill ends ahead. However, the highway will have to navigate another hill before it reaches the dam. Photo taken 08-14-2023.


An overhead VMS sits above the highway prior to its next descent. Photo taken 08-14-2023.


The speed limit through the area is 40 miles per hour, with a 35 MPH limits for trucks. Photo taken 08-14-2023.


As US 1 goes downhill again, interests to historic areas of Port Deposit in Cecil County are instructed to turn right (south) onto Maryland Route 222 on the other side of the dam. Photo taken 08-14-2023.


Shuresville Road is the final road intersected in Harford County. It goes back around to Darlington, while also accessing via Shures Landing Road the Conowingo Fisherman's Park, a popular regional sighting spot for bald eagles. Photo taken 08-14-2023.


Because large trucks are prohibited through Port Deposit, a truck route involving Maryland Route 276 (as well as Maryland Route 275) to the east exists for such traffic bound for the corridors of Interstate 95 or U.S. Route 40. Previously marked as MD 222 Truck, it no longer bears a formal state highway designation and there are instead simple "TO 95/40" shields. Photo taken 08-14-2023.


At the second hillcrest, there is a sign with flashers warning of the potential for ice on the roadway, especially in the winter months. Photo taken 08-14-2023.


There is a pedestrian crossing and a sharp curve to the left right before the dam begins. Photo taken 08-14-2023.


The curve and river valley are seen here. Photo taken 08-14-2023.


The Conowingo Dam runs across the Susquehanna River between Harford and Cecil counties, and US 1 uses it to cross between them. The dam also incorporates a hydroelectric power plant on the Harford side (seen here), offices for which are accessed from the Fisherman's Park down below. It is the Susquehanna's third-southernmost road crossing and fifth-southernmost overall, when accounting for two train bridges between Havre de Grace and Perryville downstream. Photo taken 08-14-2023.


The highway gets past the power plant, and there is now a view of the river looking south (right). The I-95 (Tydings) bridge can be seen from here on good-weather days. Photo taken 08-14-2023.


Nearing the northeast (Cecil) end of the dam, there is another 30 MPH curve to the left. Photo taken 08-14-2023.


At the end of the dam, US 1 intersects MD 222. For a number of years up until 1995, much of MD 222 was a southern extension of U.S. Route 222 from Conowingo; it was downgraded due to the tight path of the corridor through Port Deposit and a steep hill exiting the town southbound. Photo taken 08-14-2023.


After MD 222, the route crosses over a Norfolk Southern right of-way that runs along the east bank of the Susquehanna. Photo taken 08-14-2023.


US 1 now climbs uphill once more as it pulls away from the dam and river. Photo taken 08-14-2023.


Along the hill sits a Cecil County welcome sign. This is the final county in Maryland going north on US 1 before it reaches Pennsylvania. Photo taken 08-14-2023.


The right lane will end momentarily. Photo taken 08-14-2023.


For now, the speed limit remains 40 miles per hour. Photo taken 08-14-2023.


The right lane ends at the crest of the hill, near the Susquehanna Inn, and US 1 becomes a proper two-lane road again. Photo taken 08-14-2023.


Entering Conowingo, the route intersects Barrett Road. Photo taken 08-14-2023.


US 1 is preparing to meet US 222 at the center of Conowingo, and the sign at right points interests to Rising Sun straight, and to Lancaster, Pennsylvania left (north) on US 222. Photo taken 08-14-2023.


This route marker points the way to US 222 north. It runs 95 miles from here to Allentown, Pennsylvania at Interstate 78, where it becomes Pennsylvania Route 222. Meanwhile, at right is county-maintained Rowlandsville Road. Photo taken 08-14-2023.


Just past US 222, there is a US 1 reassurance shield as well as the first of the above-mentioned "TO 95/40" markers for trucks. Photo taken 08-14-2023.


The speed limit now goes up to 50 miles per hour. Photo taken 08-14-2023.


From here, Rising Sun is 5 miles to the east. Photo taken 08-14-2023.


The route proceeds slightly downward, surrounded by a cluster of trees. Photo taken 08-14-2023.


The highway then levels out and approaches Merry Knoll Lane. Photo taken 08-14-2023.


Weight restrictions for a bridge on Merry Knoll are posted here. Photo taken 08-14-2023.


The highway goes uphill again and nears an intersection with Connelly Road. Photo taken 08-14-2023.


Connelly Road, at left, leads to New Bridge Road, which reconnects with US 222, then becomes Old Mill Road and ends up in Fulton Township, Lancaster County, Pennsylvania. At right, proceeding parallel to US 1, is a disjoint segment of Colora Road, which is marked as a section of Maryland Route 591, severed in two by the removal of its bridge over the Octoraro Creek; the two combined segments of MD 591 plus the bridge were an old alignment of US 1 beforehand. Photo taken 08-14-2023.


Another "TO 95/40" shield assembly follows. Photo taken 08-14-2023.


Reaching the top of another hill and briefly poking out of the trees, US 1 then goes downward again. Photo taken 08-14-2023.


US 1 now crosses the Octoraro Creek. Photo taken 08-14-2023.


Again, the route climbs upward out of the creek valley, curving gradually to the right in the process. Photo taken 08-14-2023.


Nearing the top of the hill, the speed limit prepares to drop back down to 40. Photo taken 08-14-2023.


At a pair of forks in the road, as it prepares to straighten out northbound, US 1 intersects Porters Bridge Road, the eastern segment of MD 591, followed by Love Run Road, seen at right here. Photo taken 08-14-2023.


US 1 is now running due east, although its posted cardinal directions are still north-south. Photo taken 08-14-2023.


The Plumpton Park Zoo just outside of Rising Sun is eastbound on Maryland Route 273 up ahead. Photo taken 08-14-2023.


The highway then approaches Horse Shoe Road, which indirectly leads to the presumed namesake Horseshoe Scout Reservation straddling the line between Cecil County and Chester County, Pennsylvania; the state line runs straight through one of its campsites. Photo taken 08-14-2023.


Nearing a gradual curve to the left, US 1 passes a row of lookalike houses at right. Photo taken 08-14-2023.


US 1 is nearing the MD 273 split, where 95/40-bound truck traffic is directed to remain on US 1 for a little longer. Photo taken 08-14-2023.


"US 1" is marked here on a directional sign bearing left along with Oxford, Pennsylvania. Photo taken 08-14-2023.


Shields for US 1 north, TO I-95, and MD 273 east sit in the fork between the two routes. Known first as Rising Sun Road, then Main Street and finally Telegraph Road, MD 273 runs 16 and a half miles through Rising Sun and the Fair Hill area before crossing into Delaware and becoming Delaware Route 273 just west of Newark. Photo taken 08-14-2023.


Traffic coming from MD 273 west enters US 1 at this separate intersection just further ahead. Photo taken 08-14-2023.


Now with controlled access, US 1 assumes the name of the Rising Sun Bypass. Photo taken 08-14-2023.


The speed limit is back to 50 miles per hour. Photo taken 08-14-2023.


Passing north of Rising Sun, US 1 nears Maryland Route 276. Photo taken 08-14-2023.


"Pennsylvania" is marked continuing straight on US 1, while Rising Sun is marked for MD 276 south. At left, continuing from where MD 276 ends, is Slicers Mill Road. Photo taken 08-14-2023.


The MD 276 junction has a set of flashers hanging above it. Named the Jacob Tome Memorial Highway, MD 276 meets MD 273 at a roundabout just south of here, then goes through a section of Colora, before turning west and descending into Port Deposit to its other end at MD 222. This is also where the Port Deposit truck bypass parts ways with US 1. Photo taken 08-14-2023.


A US 1 reassurance shield follows MD 276. Photo taken 08-14-2023.


The Pennsylvania line is 4 miles away, Nottingham 5, and Philadelphia 56. Photo taken 08-14-2023.


The route goes on through a grove of trees. Photo taken 08-14-2023.


A traffic signal up ahead is situated at Red Pump Road (left) and Mount Street (right). Photo taken 08-14-2023.


Mount Street goes south from here a short distance into downtown Rising Sun. Photo taken 08-14-2023.


The signal is followed by the last northbound US 1 reassurance shield in Maryland. Photo taken 08-14-2023.


The highway dips downward into more trees. Photo taken 08-14-2023.


Up ahead, the route intersects Stevens Road. Photo taken 08-14-2023.


The next intersection is at Little New York Road. Photo taken 08-14-2023.


Finally, as it curves to the left, the highway comes up on Greenmount Road. Photo taken 08-14-2023.


Greenmount Road leads to a couple of local businesses in each direction. Photo taken 08-14-2023.


The state line is visible in the distance. Photo taken 08-14-2023.


US 1 now bids farewell to Maryland and crosses the Mason-Dixon Line into West Nottingham Township, Chester County, Pennsylvania. Just ahead, it becomes a four-lane divided highway named the Kennett Oxford Bypass, with nine freeway interchanges over 21 miles. Photo taken 08-14-2023.

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