US Bridges

US 77 over Supplejack Creek

Fair

Lavaca County, Texas · 4.41 MI S of FM 531 · Structure no. 131430037001017

Built
1949
76 years old, rebuilt 2008
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
350 ft
7 main spans
Daily traffic
4,441
2020 count
Owner
State
State Highway Agency

About this bridge

US 77 over Supplejack Creek is a steel stringer/multi-beam or girder carrying US 77 over Supplejack Creek in Lavaca County, Texas. It was built in 1949 and reconstructed in 2008, so it is 76 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 4,441 vehicles a day, roughly 13% of them trucks, projected to reach 6,760 by 2033. The structure is 350 ft (106.7 m) long and 46 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesUS 77
CrossesSupplejack Creek
Location4.41 MI S of FM 531
RouteU.S. Route 77
CountyLavaca County
StateTexas
Coordinates29.2264, -96.98226
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans7
Design loadOther
Structure length350 ft (106.7 m)
Longest span50 ft (15.2 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,441 (2020)
Projected traffic6,760 by 2033
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$24,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 77 over Supplejack Creek built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2008.

What condition is US 77 over Supplejack Creek 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 March 2023.

How much traffic does US 77 over Supplejack Creek carry?

About 4,441 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is US 77 over Supplejack Creek?

The structure is 350 ft (106.7 m) long with a longest span of 50 ft (15.2 m) and a deck 46 ft wide.

Who owns US 77 over Supplejack Creek?

It is owned by the State Highway Agency.