US Bridges

US 77 Sbml over Thomas Ranch RD

Good

Willacy County, Texas · 8.1 MI N of TX-186 · Structure no. 212450032710228

Built
2020
5 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
195 ft
3 main spans
Daily traffic
7,330
2020 count
Owner
State
State Highway Agency

About this bridge

US 77 Sbml over Thomas Ranch RD is a prestressed concrete stringer/multi-beam or girder carrying US 77 Sbml over Thomas Ranch RD in Willacy County, Texas. It was built in 2020, so it is 5 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,330 vehicles a day, roughly 10% of them trucks, projected to reach 9,800 by 2039. The structure is 195 ft (59.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 77 Sbml
CrossesThomas Ranch RD
Location8.1 MI N of TX-186
RouteU.S. Route 77
StateTexas
Coordinates26.59796, -97.76673
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length195 ft (59.4 m)
Longest span65 ft (19.8 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,330 (2020)
Projected traffic9,800 by 2039
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 77 Sbml over Thomas Ranch RD built?

It was built in 2020, making it 5 years old in 2025.

What condition is US 77 Sbml over Thomas Ranch RD in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does US 77 Sbml over Thomas Ranch RD carry?

About 7,330 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is US 77 Sbml over Thomas Ranch RD?

The structure is 195 ft (59.4 m) long with a longest span of 65 ft (19.8 m) and a deck 40 ft wide.

Who owns US 77 Sbml over Thomas Ranch RD?

It is owned by the State Highway Agency.