US Bridges

CO RD 312 over Rocky Creek

Fair

Lavaca County, Texas · 1.50 MI S of US 90A · Structure no. 131430AA0191001

Built
1983
42 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
54
2022 count
Owner
County
County Highway Agency

About this bridge

CO RD 312 over Rocky Creek is a prestressed concrete box beam or girders - multiple carrying CO RD 312 over Rocky Creek in Lavaca County, Texas. It was built in 1983, so it is 42 years old, younger 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 54 vehicles a day, roughly 3% of them trucks, projected to reach 77 by 2042. The structure is 80 ft (24.4 m) long and 22 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCO RD 312
CrossesRocky Creek
Location1.50 MI S of US 90A
RouteCounty Highway 312
CountyLavaca County
StateTexas
Coordinates29.41155, -97.0658
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length80 ft (24.4 m)
Longest span77 ft (23.5 m)
Deck width22 ft (6.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54 (2022)
Projected traffic77 by 2042
Trucks3%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CO RD 312 over Rocky Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is CO RD 312 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 January 2025.

How much traffic does CO RD 312 over Rocky Creek carry?

About 54 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is CO RD 312 over Rocky Creek?

The structure is 80 ft (24.4 m) long with a longest span of 77 ft (23.5 m) and a deck 22 ft wide.

Who owns CO RD 312 over Rocky Creek?

It is owned by the County Highway Agency.