US 77 has nine designated
business loops in Texas, between the
one in Waco and the mainline highway's southern terminus at the
Mexico border. US 77 also has one
auxiliary route designated as
Alt. US 77, which is a alternate route of US 77, located entirely in the state of Texas, running from
Hallettsville to
Refugio. Alt. US 77 also has a designated business loop in
Yoakum, labeled "Business Alternate US 77-Q".
Driscoll business loop Business U.S. Highway 77 (
Bus. US 77) is a business loop in
Driscoll. The southern terminus of the business loop begins at an interchange with
I-69E/US 77 and travels northeast into town, with the only major intersection being
FM 665. The business loop runs mostly parallel with the mainline I-69E/US 77 and its northern terminus is at another interchange with the latter highway.
Waco business loop Business U.S. Highway 77-L (
Bus. US 77-L) is a business loop in
Waco. The highway is the old alignment of US 77 through the city and was formerly signed as a US 77 and
US 81 business loop, but designated as Loop 491 on October 2, 1970, until it was changed to the current Bus. US 77 designation on June 21, 1990. The section of highway from Loop 484 to
US 84 is a
freeway, making it the only business route in Texas that is a freeway.
Victoria business loop Business U.S. Highway 77-S (
Bus. US 77-S) is a business loop in
Victoria. The loop's southern terminus begins at an interchange with US 77 and
US 59 south of Victoria, traveling northward before reaching a grade separated interchange with Bus. US 59-T. Bus. US 77-S and Bus. US 59-T travel northeastward on Moody Street before making a sharp right curve eastward to Rio Grande Street. On Main Street, the two highways share a wrong-way concurrency with
US 87 before Bus. US 77-S turns to the north onto Navarro Street. The business loop's northern terminus is at an intersection with US 77 and
Loop 463 north of town.
Sinton business loop Business U.S. Highway 77-T (
Bus. US 77-T) is a business loop in
Sinton. The business loop begins at an interchange with US 77 southwest of Sinton, turning northeast before intersecting with
US 181 and
SH 188. After a short overlap with both highways eastward, Bus. US 77-T turns back to the north and continues northeast until its northern terminus at another interchange with US 77 northeast of town.
Robstown business loop Business U.S. Highway 77-U (
Bus. US 77-U) is a business loop in
Nueces County. The business loop's southern terminus begins at an intersection of
I-69E and US 77 in southern
Robstown, heading north into town. The business loop then intersects with
Bus. SH 44-C, sharing a short overlap with the business loop before Bus. US 77-U splits away from Bus. SH 44-C, heading northeast. The business loop intersects with I-69E and US 77 and ends at its northern terminus north of Robstown after running parallel with the latter two highways on the frontage roads.
Kingsville–Bishop business loop Business U.S. Highway 77-V (
Bus. US 77-V) is a business loop that runs through
Kingsville and
Bishop. The business loop's southern terminus begins at an intersection with US 77 and travels northwest and then turns to the north, eventually entering Kingsville. The route then turns to the northeast and then turns left onto S 14th Street, heading north. Bus. US 77-V then turns back to the northeast after leaving Kingsville and eventually enters Bishop after a few miles. After passing through Bishop, Bus. US 77-V then turns to the east and hits its northern terminus at another intersection with US 77.
Riviera business loop Sebastian–Lyford–Raymondville business loop Business U.S. Highway 77-W (
Bus. US 77-W) is a business loop that runs through
Sebastian,
Lyford, and
Raymondville. The business loop begins at its southern terminus at an intersection with
I-69E and US 77, turning to the northwest before turning north, running parallel with I-69E and US 77. Bus. US 77-W reaches Sebastian, passing through town before exiting, eventually reaching South Lyford and
Lyford. Bus. US 77-W continues northward out of town before turning slightly to the northeast and entering
Raymondville. The business loop continues northeastward before reaching an intersection with
Willacy County Road 3690W. Bus. 77-W then turns to the right and immediately ends at its northern terminus at another intersection with I-69E and US 77.
San Benito–Harlingen–Combes business loop Business U.S. Highway 77-X (
Bus. US 77-X) is a business loop that runs through
San Benito,
Harlingen, and
Combes. The business loop begins at an interchange with
I-69E and US 77, heading northwest through San Benito before entering Harlingen. After briefly turning to the north while passing through Harlingen, Bus. US 77-X turns back to the northwest where it intersects with I-69E and US 77 again. The business loop then exits Harlingen and continues northwest into Combes. After leaving Combes, the business loop reaches its northern terminus at another intersection with I-69E and US 77.
Brownsville business loop Business U.S. Highway 77-Z (
Bus. US 77-Z) is a business loop in
Brownsville. The loop's southern terminus begins at an intersection of
SH 4 and takes a northwestern direction before turning to the north. The business loop's northern terminus is at an intersection of
FM 802, close to an intersection of
I-69E, US 77, and
US 83.
Auxiliary route Alternate US Highway 77 (
Alt. US 77) is a north-south auxiliary route of US 77, located entirely within the state of Texas. The alternate route was commissioned in 1953 when the mainline US 77 was rerouted through southeast Texas. Alt. US 77 begins at an intersection in
Refugio with the mainline US 77, sharing a concurrency with
US 183. The two highways share a concurrency through
Goliad and
Cuero.
SH 239 shares a short overlap with Alt. US 77 and US 183 through Goliad, and
US 87 shares a concurrency with the two highways in Cuero. Alt. US 77 splits away from US 183, heading northeast through
Yoakum, which also has a business loop of the highway. After passing through Yoakum, Alt. US 77 intersects and merges with
Alt. US 90 just west of
Hallettsville, where the two highways intersect with mainline US 77.
Yoakum auxiliary business loop Alt. US 77 has one
business loop in
Yoakum. Officially designated by TxDOT as
Business US 77-Q, it is signed with two auxiliary banners as
Business Alternate US 77 (
Bus. Alt. US 77). The route was originally established as
Loop 51 in 1939 and was redesignated in 1991. The loop begins at Alt. US 77 south of Yoakum, then travels northwest into the city along Huck Street. It then turns north along Irvine Street, and has a brief concurrency with
SH 111. It then turns northwest along Gonzales Street to an intersection with mainline Alt. US 77. ==Notes==