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Interstate 66 west

In northwest Washington, DC, the E Street Expressway approaches a tunnel under Virginia Avenue after receiving traffic from 20th and E streets, as it leads to the earnest beginning of Interstate 66. Photo taken 08-05-2016.

Past Virginia Avenue, a pair of old overhead signs points the ways to E Street, onto which truck traffic is directed, and I-66 proper. Photo taken 08-05-2016.

E Street is a left exit, as a ramp from 25th Street comes in and the highway passes the Kennedy Center. Photo taken 08-05-2016.

Subsequently, traffic from westbound E Street merges in. Photo taken 08-05-2016.

Finally, the highway receives a ramp from westbound Constitution Avenue, otherwise known as U.S. Route 50, and I-66 heads west toward the Roosevelt Bridge over the Potomac River, concurrent with US 50. Photo taken 08-05-2016.

Drivers staying on I-66, marked toward Rosslyn in Arlington, Virginia just ahead, are advised to keep left. Photo taken 08-05-2016.

The next exit is where US 50 leaves the highway as Arlington Boulevard. There is also a ramp to the George Washington Parkway from the same offramp. Photo taken 08-05-2016.

A gantry at the end of the bridge indicates an HOV lane is at far-left, displays travel times to Front Royal a considerable distance ahead as well as Dulles Airport, and points the way to Arlington Boulevard and the GW Parkway. Photo taken 08-05-2016.

US 50 leaves I-66 on this exit ramp. 1000 Wilson Boulevard, home of a branch of Grant Thornton, is visible at far-right. Photo taken 08-05-2016.

The highway curves sharply to the right as it has now entered Rosslyn, and the left lane ends just ahead. Photo taken 08-05-2016.

A Virginia welcome sign sits here. Photo taken 08-05-2016.

Exit 73, U.S. Route 29/Lee Highway into Rosslyn and toward the Key Bridge back into DC, is approaching. Photo taken 08-05-2016.

Another dynamic message sign with I-66 reassurance is situated on the gantry pointing to exit 73. Photo taken 08-05-2016.

The exit 73 gore sign, with the ramp itself at far-right. In the distance sits the Key Bridge Marriott. Photo taken 08-05-2016.

I-66 then prepares to pass under Lynn Street and Rosslyn's Gateway Park, as a sign pointing the way to the Capital Beltway (I-495) and a move over for emergency vehicles sign line the westbound lanes. Photo taken 08-05-2016.

North Lynn Street is specifically noted as I-66 begins its passage through the tunnel. Photo taken 08-05-2016.

The highway then emerges parallel to the southbound lanes of US 29, now known here as Langston Boulevard, and passes by the Air Force Association's headquarters. Photo taken 08-05-2016.

The next overpass is North Scott Street. Photo taken 08-05-2016.

After a bend in I-66, southbound US 29 passes over the highway and proceeds to rejoin US 29 north. Photo taken 08-05-2016.

A subsequent I-66 reassurance shield sits among trees, as the highway passes south of Spout Run and accompanying parkland. Photo taken 08-05-2016.

The highway then crosses over Spout Run Parkway (Virginia State Route 124), and the Custis Trail. Photo taken 08-05-2016.

Afterward, a bridge of similar design takes I-66 back over US 29, which has an eastbound exit/westbound entrance (72) with the highway here. Photo taken 08-05-2016.

Westbound I-66 receives the onramp from US 29, which becomes a third lane for the carriageway. Photo taken 08-05-2016.

I-66 now begins to pass north of Arlington's Ballston district and approaches exit 71, Virginia State Route 120/Glebe Road. This sign is mounted on North Lincoln Street's overpass over the highway. Photo taken 08-05-2016.

The National Science Foundation is off the next exit. Photo taken 08-05-2016.

Ballston is noted as being reached from the next exit. Photo taken 08-05-2016.

Marymount University and the Arlington campus of George Mason University are also located off exit 71. Photo taken 08-05-2016.

After I-66 passes under North Quincy Street and part of the property of Washington-Liberty High School, the Arlington Center of Northern Virginia Community College is noted to be off the next exit. Photo taken 08-05-2016.

I-66 passes under North Utah Street as it approaches exit 71, which is a westbound exit and eastbound entrance. Photo taken 08-05-2016.

Glebe Road crosses over I-66 here. In addition to the aforementioned points, Glebe Road heads south to the Ballston Quarter mall and to the Washington Capitals' practice facility, the MedStar Capitals Iceplex. Photo taken 08-05-2016.

The highway's next overpass is Washington Boulevard. Photo taken 08-05-2016.

I-66 then bends to the right and passes under George Mason Drive. Photo taken 08-05-2016.

The highway then receives westbound Fairfax Drive, the crossroad of the eastbound complement of exit 71. Fairfax Drive heads back east into Ballston and toward Clarendon. Photo taken 08-05-2016.

I-66 reassurance follows this series of ramps and overpasses as the highway approaches the North Harrison Street overpass. Photo taken 08-05-2016.

The speed limit is marked as 55 miles per hour. Photo taken 08-05-2016.

The Orange and Silver lines of the Washington Metro have emerged from underground and are now in the median of I-66, remaining there for about nine miles until ending in Vienna. Photo taken 08-05-2016.

Exit 69, Sycamore Street toward Falls Church, is three-quarters of a mile from this overpass, Patrick Henry Drive. Photo taken 08-05-2016.

A variable message sign showing the time to southbound I-495 (outer loop of the Capital Beltway) sits to the left of the next advance sign for exit 69; the two share a gantry. Photo taken 08-05-2016.

The East Falls Church Metro station can be reached from this exit. Photo taken 08-05-2016.

The exit 69 gore sign. The East Falls Church station is in the median of I-66 just past the exit, while the station's parking lot sits on the other side of the westbound lanes. Photo taken 08-05-2016.

A concrete wall sits just behind a pedestrian overpass connecting the East Falls Church station and parking lot. Photo taken 08-05-2016.

I-66 passes under US 29 again, then 25th Street, before crossing over Westmoreland Street as it receives traffic from westbound Virginia Route 237, Boulevard. Photo taken 08-05-2016.

The highway, and Metro line, then cross over Williamsburg Boulevard, which leads northeast back to Glebe Road. Photo taken 08-05-2016.

The next exit is exit 67 and is the eastern terminus of Virginia Route 267, which becomes the Dulles Access Road and Greenway. VA 267 is marked here as going toward Baltimore via I-495 (and I-95). Photo taken 08-05-2016.

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