US Bridges

SH 71 WB over Alum Creek

FairPosted for load

Bastrop County, Texas · 6.0 MI E of SH 95 · Structure no. 140110026505013

Built
1932
93 years old, rebuilt 1961
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
138 ft
5 main spans
Daily traffic
11,259
2023 count
Owner
State
State Highway Agency

About this bridge

SH 71 WB over Alum Creek is a concrete tee beam carrying SH 71 WB over Alum Creek in Bastrop County, Texas. It was built in 1932 and reconstructed in 1961, so it is 93 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 11,259 vehicles a day, roughly 11% of them trucks, projected to reach 17,565 by 2042. The structure is 138 ft (42.1 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 71 WB
CrossesAlum Creek
Location6.0 MI E of SH 95
RouteState Highway 71
StateTexas
Coordinates30.06813, -97.21916
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length138 ft (42.1 m)
Longest span28 ft (8.5 m)
Deck width49 ft (14.8 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,259 (2023)
Projected traffic17,565 by 2042
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 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 SH 71 WB over Alum Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1961.

What condition is SH 71 WB over Alum 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 November 2024.

How much traffic does SH 71 WB over Alum Creek carry?

About 11,259 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SH 71 WB over Alum Creek?

The structure is 138 ft (42.1 m) long with a longest span of 28 ft (8.5 m) and a deck 49 ft wide.

Who owns SH 71 WB over Alum Creek?

It is owned by the State Highway Agency.