US Bridges

US 77A over Spring Branch

Fair

Lavaca County, Texas · 0.50 MI SW of FM 340 · Structure no. 131430026903008

Built
1924
101 years old, rebuilt 1954
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
34 ft
2 main spans
Daily traffic
7,210
2013 count
Owner
State
State Highway Agency

About this bridge

US 77A over Spring Branch is a concrete slab carrying US 77A over Spring Branch in Lavaca County, Texas. It was built in 1924 and reconstructed in 1954, so it is 101 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 7,210 vehicles a day, roughly 17% of them trucks, projected to reach 10,090 by 2033. The structure is 34 ft (10.4 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 77A
CrossesSpring Branch
Location0.50 MI SW of FM 340
RouteU.S. Route 77
CountyLavaca County
StateTexas
Coordinates29.42744, -96.99361
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length34 ft (10.4 m)
Longest span17 ft (5.2 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,210 (2013)
Projected traffic10,090 by 2033
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 77A over Spring Branch built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1954.

What condition is US 77A over Spring Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does US 77A over Spring Branch carry?

About 7,210 vehicles per day (2013 count), of which roughly 17% are trucks.

How long is US 77A over Spring Branch?

The structure is 34 ft (10.4 m) long with a longest span of 17 ft (5.2 m) and a deck 42 ft wide.

Who owns US 77A over Spring Branch?

It is owned by the State Highway Agency.