U.S. Route 377

The southern terminus is in Del Rio, Texas at an intersection with U.S. Route 90. It goes north of town co-signed with U.S. Route 277 for 20 miles (32 km). After splitting off, it enters Edwards County and Carta Valley. It meets SH 55 at the county seat, Rocksprings, before serving as the western terminus of SH 41. About 20 miles north of Rocksprings, the route meets with the headwaters of the South Llano River, which follows the route into Junction, Texas. It heads northeast into Kimble County, crossing the county line near Telegraph. At Junction, it meets both Interstate 10 and US 83. It then continues northeast through London, extreme southeastern Menard County, and Mason County. In Mason County, US 377 passes through Streeter before forming a concurrency with SH 29 near Grit. In Mason, SH 29 splits off to its own alignment while US 377 turns north to join U.S. Route 87.

US 87/377 head north together into Brady, where they meet US 190, the southern terminus of US 283, and SH 71. US 377 splits off to the north and heads to Mercury and crosses the Colorado River near Winchell. In Brownwood, US 377 joins with U.S. Route 67, following its routing all the way to Stephenville, where US 377 splits off on its own again. US 377 then enters Hood County, where it passes through the county seat, Granbury. It cuts the corners of both Johnson County and Parker County before entering Tarrant County and the Dallas-Fort Worth Metroplex.

US 377 crosses Interstate 20 at exit 429A in Benbrook. It then enters Fort Worth proper, meeting SH 183 and Spur 580. It runs northeast on Camp Bowie Blvd. to Interstate 30, which it begins a concurrency with. At the Interstate 35W junction, it heads north along that highway before splitting off at Exit 52A (Belknap St.). It heads due north at the Denton Highway and continues to run parallel to I-35W through many Fort Worth suburbs, including Haltom City, Watauga, Keller, Westlake, Roanoke, and Argyle. In Denton, it crosses Interstate 35E and has a brief concurrency with US 380 through the eastern portion of Denton into Crossroads.

After splitting from US 380, US 377 runs through Crossroads and north into Krugerville. It continues through Aubrey, through Pilot Point, Tioga, and Collinsville, before having an interchange with US 82 at Whitesboro. It the heads north to cross Lake Texoma (the Red River) into Oklahoma.

US 377 is co-signed with State Highway 99 for its entire Oklahoma length. US 377's first junction within Oklahoma is with SH-32 west of Kingston. The first town that US 377/SH-99 pass through is Madill, where the two highways meet US 70 and State Highway 199. The next town after that is Tishomingo, where there is a brief concurrency with SH-22. US 377/SH-99 run north from Tishomingo, having a one-mile (1.6 km) three-route concurrency with SH-7 before meeting State Highway 3 southeast of Ada. US 377/SH-99 run around the east and north sides of town. On the north side of Ada, SH-3E joins the concurrency.

After leaving Ada, US 377/SH-3E/99 pass through Byng. The three highways cross the Canadian River just south of a junction that serves as the eastern terminus of SH-39 and the western terminus of SH-56. North of Bowlegs, SH-59 joins with the other routes briefly. The next major town is Seminole, where the highways meet SH-9, and SH-3E splits off. US 377/SH-99 cross I-40 at Exit 200. The highways have a junction with US 62 in Prague.

As of 2007, the highway's northern terminus is in Stroud, Oklahoma at an indeterminate point somewhere between old Route 66 (now Oklahoma State Highway 66) and modern Interstate 44. SH-99 continues north into Kansas.

When US 377 was commissioned in 1930, US 77 connected Dallas, Texas with the north and south, but nearby Fort Worth lacked a direct northern connection. US 377 connected US 77 in Denton, Texas with US 81 in Fort Worth, forming a parallel route between Denton and Hillsboro, where US 81 met US 77. When the Interstate highway system was built, I-35 paralleled the Dallas–Fort Worth split with routes I-35E through Dallas (along US 77) and I-35W through Fort Worth (along US 377 and US 81). The section of US 377 in Texas north of Denton was signed as SH 99 until 1968.^[1]

The "Willis Bridge" crossing the Red River was constructed in 1968. It has guardrail damage causing the remaining bridge to be very narrow and has since been considered structurally deficient. Parts of the bridge have collapsed.^[2][3][4] An original ETA of replacement was February 2018, costing $80 million. In November 2018, the Oklahoma Transportation Commission awarded a $43 million contract to replace the bridge with a new two-lane bridge scheduled to start construction in late December 2018 or early January 2019.^[5]

U.S. 377 remained a two-lane highway between Denton and Fort Worth. It has since been widened with more construction scheduled. North of Denton, U.S. 377 is currently two lanes.

The US 377 Cresson Relief Route is a four-lane freeway bypass of Cresson and an at-grade railway crossing that is currently under construction and planned to open in late 2025.^[6][7] The project, originally planned to be opened to traffic in 2022, has faced multiple delays.^[8][9][10]

State	County	Location	mi	km	Destinations	Notes
Texas	Val Verde	Del Rio	0.0	0.0	US 90 east / US 277 south / Spur 239 south (East Gibbs Street) / Spur 297 south (Veteran's Boulevard) – Laughlin AFB, Brackettville, Eagle Pass, Ciudad Acuña, Business District	Southern terminus; south end of US 90/US 277 overlap
		​	4.4	7.1	US 90 west – Comstock, Amistad NRA Visitor Information, Big Bend National Park	North end of US 90 overlap
		​	5.5	8.9	Loop 79 to US 90 – Eagle Pass, Laredo	Interchange
		​	17.6	28.3	RE 2 west – Amistad National Recreation Area, Rough Canyon
		​	26.6	42.8	US 277 north – Sonora	North end of US 277 concurrency
	Edwards	​	40.8	65.7	RM 2523 south to US 90
		​	72.6	116.8	RM 674 south – Brackettville, Kickapoo State Park
		Rocksprings	75.7	121.8	SH 55 north – Sonora	South end of SH 55 concurrency
			76.2	122.6	SH 55 south – Uvalde	North end of SH 55 concurrency
		​	78.1	125.7	RM 2630 north
		​	84.2	135.5	SH 41 east – Mountain Home
	Kimble	​	118.6	190.9	PR 73 – South Llano River State Park, Walter Buck WMA
		Junction	122.1	196.5	FM 2169 east (Flatrock Lane) – Texas Tech University at Junction
			122.9	197.8	Loop 481 east (Main Street) – Kerrville
			124.2	199.9	RM 1674 west
			124.5	200.4	I-10 / US 83 south – Fort Stockton, Uvalde, San Antonio, Sonora	South end of US 83 concurrency; I-10 exit 456
		​	125.4	201.8	US 83 north – Menard	North end of US 83 concurrency
		​	136.0	218.9	FM 3480 east to RM 385
		​	139.5	224.5	RM 385 south to US 290
		​	143.9	231.6	RM 1221 north – Hext
	Menard	No major junctions
	Mason	Grit	161.7	260.2	SH 29 west – Menard	South end of SH 29 overlap
		​	165.9	267.0	US 87 south / SH 29 east – Llano, Mason	North end of SH 29 overlap; south end of US 87 overlap
	see US 87
	McCulloch	Brady	193.2	310.9	US 87 north to US 283 – San Angelo	North end of US 87 concurrency
			193.3	311.1	FM 714 east (East Main Street)
			194.1	312.4	US 190 east – Rochelle, San Saba	North end of US 190 concurrency
			194.7	313.3	FM 2996 north
		​	199.3	320.7	FM 1121 west	South end of FM 1121 overlap
		​	200.3	322.4	FM 1121 east – Rochelle	North end of FM 1121 overlap
		​	207.7	334.3	FM 1028 north
		​	215.8	347.3	FM 502 east
		​	216.5	348.4	FM 765 west	South end of FM 765 overlap
		​	216.7	348.7	FM 765 east to FM 45 – Elm Grove	North end of FM 765 overlap
	Brown	Dulin	224.8	361.8	FM 586 north – Brookesmith, Trickham	South end of FM 586 overlap
		​	225.9	363.6	FM 586 south	North end of FM 586 overlap
		​	233.8	376.3	FM 1176 north – Trickham
		​	235.8	379.5	FM 45 south – Richland Springs, T.R. Havins Unit, Gordon Wood Stadium
		​	236.8	381.1	FM 3064 east (Morris Sheppard Drive) – Gordon Wood Stadium
		Brownwood	239.2	385.0	Fisk Street / Carnegie Street / Coleman Avenue	Interchange
			240.0	386.2	FM 2524 (Austin Avenue) – Downtown Historic Area, Howard Payne University
			240.8	387.5	US 67 south / US 84 west (West Commerce Street) to SH 279 – Coleman	South end of US 67 / US 84 concurrency
	see US 67
	Erath	Stephenville	301.6	485.4	US 67 north – Glen Rose	North end of US 67 concurrency
			302.0	486.0	US 281 – Mineral Wells, Hico, Airport
			302.4	486.7	FM 205 – Cedar Point
		​	304.0	489.2	Bus. US 377 south – Stephenville
		​	314.5	506.1	FM 1188 west – Morgan Mill
		Bluff Dale	316.1	508.7	FM 2481 south
	Hood	​	322.2	518.5	FM 2870 south (Rock Church Highway)
		Tolar	322.9	519.7	FM 56 north (Tolar Highway)	South end of FM 56 overlap
			323.2	520.1	FM 56 south – Glen Rose	North end of FM 56 overlap
		Granbury	329.1	529.6	Loop 567 north – Weatherford
			329.8	530.8	Bus. US 377 north – Granbury, Historical District, Airport
			330.9	532.5	SH 144 – Granbury, Glen Rose	Interchange
			333.2	536.2	Bus. US 377 south / FM 4 north – Granbury, Historical District	Interchange; south end of FM 4 overlap
			335.3	539.6	FM 4 south – Acton	North end of FM 4 overlap
			336.4	541.4	FM 167 north	South end of FM 167 overlap
			337.5	543.2	FM 167 south – Acton, Camp El Tesoro	North end of FM 167 overlap
		Cresson	343.9	553.5	SH 171 – Weatherford, Cleburne
	Johnson	No major junctions
	Parker	No major junctions
	Tarrant	Wheatland	352.1	566.7	FM 1187 east – Crowley	South end of FM 1187 overlap
		​	352.6	567.5	FM 1187 west	North end of FM 1187 overlap
Benbrook		356.2	573.2	RM 2871 west
		358.4– 358.5	576.8– 576.9	I-20 / I-820 north	I-20 exit 429A
Fort Worth		360.8– 361.0	580.7– 581.0	SH 183 (Alta Mere Drive / Southwest Boulevard) to Spur 580	traffic circle
		361.7	582.1	Spur 580 west (Camp Bowie West Boulevard) to SH 183	No left turn northbound
				Camp Bowie Boulevard	Interchange; northbound exit and southbound entrance; Spur 580 is former US 80
		363.9	585.6	I-30 west – Abilene	Southbound exit and northbound entrance; south end of I-30 overlap; US 377 south follows exit 9Bl
		see I-30
		368.1– 368.3	592.4– 592.7	I-30 east / I-35W south / US 287 south / SH 180 east (East Lancaster Street) – Dallas, Waco	North end of I-30 overlap; south end of I-35W / US 287 overlap; US 377 north follows exit 15A; US 377 south follows exit 51; SH 180 (East Lancaster Street) is former US 80
		369.2	594.2	Spur 280 – Downtown Fort Worth	I-35W exit 52A, access to Fort Worth Central Station
		369.8– 369.9	595.1– 595.3	I-35W north / US 287 north / SH 121 north / Spur 347 west (Belknap Street) – Denton, D/FW Airport	North end of I-35W / US 287 overlap; US 377 north follows exit 52B
Haltom City		373.3	600.8	SH 183 west (Northeast 28th Street)	South end of SH 183 overlap
		373.9	601.7	SH 183 east (East Belknap Street)	North end of SH 183 overlap
		376.5– 376.6	605.9– 606.1	I-820 (Northeast Loop 820) / I-820 Express	I-820 exit 19
Keller		383.2	616.7	FM 1709 east (Keller Parkway) / Golden Triangle Boulevard – Grapevine
Westlake		386.9– 387.0	622.7– 622.8	SH 170	Proposed upgrade to interchange
Denton	Roanoke	388.3	624.9	To Bus. SH 114 / Denton Drive (Loop 118)
		389.0– 389.1	626.0– 626.2	SH 114	Proposed upgrade to interchange
	Flower Mound	392.2	631.2	FM 1171 – Lewisville
	Argyle	395.5	636.5	FM 407 to I-35E – Justin
	Denton	401.6	646.3	FM 1830 south (Country Club Road) to FM 407 – Bartonville
		403.0– 403.1	648.6– 648.7	I-35E	I-35E exit 465B
		403.9	650.0	US 77 south (East Eagle Drive)	South end of US 77 concurrency
		404.6	651.1	FM 426 east (McKinney Street)
		405.6	652.7	US 77 north (North Locust Street) / US 380 west (West University Drive) to FM 428	North end of US 77 concurrency, south end of US 380 concurrency
		408.1	656.8	Loop 288 / US 380 Truck west	Interchange
	Cross Roads	412.6	664.0	US 380 east – McKinney	Interchange; north end of US 380 concurrency
		414.7	667.4	FM 424 south
	Aubrey	418.2	673.0	FM 428 (Springhill Road) – Aubrey, Celina
		420.2	676.2	FM 3524 south
	Pilot Point	423.2	681.1	FM 455 west – Sanger, Ray Roberts Lake and State Park	South end of FM 455 overlap
		423.9	682.2	Bus. US 377 north
		425.4	684.6	FM 455 east / FM 1192 west (East Liberty Street) – Pilot Point, Celina	North end of FM 455 overlap
		426.7	686.7	Bus. US 377 south (North Washington Street) – Pilot Point
Grayson	Tioga	430.2	692.3	Bus. US 377 north (South Donation Street)
		430.7	693.1	FM 121 east (Sherman Street) – Gunter
		431.0	693.6	Bus. US 377 south (North Donation Street)
		431.6	694.6	FM 922 west – Valley View
	Collinsville	436.8	703.0	Bus. US 377 north (South Main Street)
		437.0	703.3	FM 902 (Locust Street) – Lake Kiowa, Ethel
		437.9	704.7	Bus. US 377 south (North Main Street)
	​	440.1	708.3	Bus. US 377 north – Whitesboro
	Whitesboro	443.5	713.7	Spur 129 to SH 56 – Whitesboro, Sherman
		445.1	716.3	Bus. US 377 south – Whitesboro
		445.2– 445.3	716.5– 716.6	US 82 – Gainesville, Sherman	Interchange; US 82 exit 624
	​	454.5	731.4	FM 901 south – Gordonville	South end of FM 901 overlap
	​	455.2	732.6	FM 901 north – Sheppard AFB Annex	North end of FM 901 overlap
Lake Texoma			460.4 0.0	740.9 0.0	Willis Bridge; Texas–Oklahoma line     SH-99 begins
See SH-99
Oklahoma	Lincoln	Stroud	139.9	225.1	SH-99 north / I-44 / Turner Turnpike – Oklahoma City, Tulsa	ODOT lists this as northern terminus; I-44 exit 179; road continues as SH-99 north
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

Texas State Highway Loop 118 (Loop 118) is a short and unsigned loop highway. The highway connects Highway 377 to Business State Highway 114 (Bus. SH 114) without the need for an intersection between those highways. The loop is just 0.209 miles (0.336 km) long, and is located entirely within the downtown portion of the town of Roanoke, Texas. The highway was first designated on February 4, 1941. The original route traveled from US 377 just south of Roanoke, along Oak Street, past Bus. SH 114 northward to SH 114, with State Highway Spur 118 (Spur 118) going from Loop 118 to US 377 via Denton Drive.^[11] On September 26, 1996, the stretch of Oak St. traveling from US 377 to Denton Dr. was given back to the city of Roanoke.

The entire route is in Roanoke, Denton County.

mi[12]	km	Destinations	Notes
0.000	0.000	US 377 (Front Street) – Ft. Worth, Denton	Southern terminus; road continues west as Denton Drive
0.209	0.336	Bus. SH 114 (Byron Nelson Boulevard)	Northern terminus; road continues as Oak Street
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

• U.S. Route 77
• U.S. Route 177
• U.S. Route 277

• Endpoints of US highway 377
• Oklahoma Terminus: US 377

Browse numbered routes
←   SH 361	TX	→   US 380
←   SH-325	OK	→   US 385