US Bridges

FM 531 over Rocky Creek

Fair

Lavaca County, Texas · 0.30 MI S of US 90A · Structure no. 131430026910035

Built
1964
61 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
200 ft
5 main spans
Daily traffic
483
2024 count
Owner
State
State Highway Agency

About this bridge

FM 531 over Rocky Creek is a concrete stringer/multi-beam or girder carrying FM 531 over Rocky Creek in Lavaca County, Texas. It was built in 1964, so it is 61 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 483 vehicles a day, roughly 20% of them trucks, projected to reach 598 by 2042. The structure is 200 ft (61 m) long and 26 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesFM 531
CrossesRocky Creek
Location0.30 MI S of US 90A
RouteState Highway 531
StateTexas
Coordinates29.42471, -97.11754
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43 US tons
Inventory rating26 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length200 ft (61 m)
Longest span40 ft (12.2 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic483 (2024)
Projected traffic598 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 FM 531 over Rocky Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is FM 531 over Rocky 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 February 2023.

How much traffic does FM 531 over Rocky Creek carry?

About 483 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is FM 531 over Rocky Creek?

The structure is 200 ft (61 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.

Who owns FM 531 over Rocky Creek?

It is owned by the State Highway Agency.