I-66

 Interstate 66 is a an interstate freeway that goes from I-81 near Strasburg to US 29 in Washington, DC. It connects Front Royal to Northern Virginia and Washington, DC.

I-66 Shield

The Route Path:

I-66 starts at an interchange with I-81 just north of Strasburg. The interstate heads to the east, passing a truck rest stop, before approaching Front Royal. Just north of Front Royal, I-66 has an exit for US 340 and US 522. The interstate heads southeast from the Front Royal area, and goes very close to VA-55 as they go over the Blue Ridge Mountains, where the interstate has an exit for VA-79, a very short state route which connects the interstate to VA-55. Just east of the mountains, I-66 has an exit for SR-688.

I-66 beginning at SB I-81.

Shortly after, the interstate has an exit for VA-55, before an exit, and start of a concurrency with US 17, which also carries VA-55. The routes head southeast towards Marshall, where Business US 17 and VA-55 split off. Just southeast of the town, Business US 17 meets I-66, and Mainline US 17, which splits off at the exit.

Southwest of The Plains, I-66 has an exit for VA-245. VA-55 goes parallel to the interstate again, as they head east. Shortly after, I-66 has a diverging-diamond interchange with US 15 in Haymarket, followed by an interchange with US 29 in Gainesville.

I-66 continues east of Gainesville, having an interchange with the VA-234, followed by a concurrency with the route. Shortly after, the concurrency ends as VA-234 splits off, and soon after, the interstate enters Fairfax County as it crosses Bull Run. Shortly after, the interstate has another interchange with US 29. The interchange is followed by a huge interchange with VA-28. After VA-28, I-66 has an interchange with VA-286, followed by US 50. After those exits, the interstate has an interchange with VA-123.

The west end of the VA-234 concurrency.

The electronic sign isn't wrong.

I-66 continues east as VA-234 splits.

Approaching the VA-28/US 29 exits.

At Exit 53 for VA-28 North.

Shortly after all the exits, I-66 has an exit with VA-243 (Nutley Road). After the exit, the interstate has an interchange with I-495 near Merrifield. After the interstate enters the beltway, it has an interchange with VA-7, and meets the eastern terminus of VA-267. In Falls Church, I-66 has another interchange with US 29, though, it is indirect. In Arlington, the interstate meets the west end of Fairfax Drive, and has a half exit with VA-120.

I-66 at VA-243 (Nutley Street).

The massive I-495 interchange.

I-66 passing by the VA-7 Exit.

The exit for VA-237, connecting to US 29.

In Maywood, I-66 has a half exit for US 29, followed by a concurrency. Shortly after, US 29 splits from I-66, followed by an interchange with US 50, VA-110, and the George Washington Memorial Parkway. Just after the interchange, I-66 enters Washington, D.C.

US 29 joins I-66 here.

US 29 leaves I-66 here to cross the Key Bridge into DC.

Approaching VA-110 in Arlington (County).

Just after entering DC, the interstate has an interchange with Constitution Avenue, and heads north through a tunnel under Virginia Avenue. Shortly after leaving the tunnel, I-66 meets US 29 again, and the interstate meets its eastern terminus.

My Experiences:

I have been on I-66 multiple times. The most major trips of mine to involve the interstate include my Trip to DC on April 21, 2024, where I used it in both directions, as well as the trips to & from Ocean City, MD on August 9, 2023, and August 13, 2023, respectively.

Exit List:

Exit Number	Route
Exit 1	I-81 - Roanoke/Winchester
Exit 6	US 340/US 522 (Winchester Rd.)
Exit 13	VA-79 (To VA-55)
Exit 18	SR-688 (Leeds Manor Rd.)
Exit 23	US 17 North/VA-55
Exit 27	US 17 Business/VA-55 (Main St.)
Exit 28	US 17 South/US 17 Business
Exit 31	VA-245 (Old Tavern Rd.)
Exit 40	US 15 (James Madison Hwy.)
Exit 43	US 29 (Lee Hwy.)
Exit 44	VA-234 South (Prince William Pkwy)
Exit 47	VA-234 North/VA-234 Business
Exit 52	US 29 (Lee Hwy.)
Exit 53	VA-28 North
Exit 55	VA-286 (Fairfax County Pkwy.)
Exit 57	US 50 (Fairfax Blvd.)
Exit 60	VA-123 (Chain Bridge Rd.)
Exit 62	VA-243 (Nutley St.)
Exit 64	I-495 - Baltimore/Richmond
Exit 66	VA-7 (Leesburg Pike)
Exit 67	VA-267 West (WB Exit Only)
Exit 68	Fairfax Dr./Westmoreland St.
Exit 69	US 29/VA-237 (Langston Blvd.)
Exit 71	Fairfax Dr./Glebe Rd.
Exit 72	US 29 South (Langston Blvd.)
Exit 73	US 29 North
Exit 75	VA-110 South (Richmond Hwy.)
State Line	I-66 East - Washington, DC