US Bridges

SH 71 over Little Alum Creek

Fair

Bastrop County, Texas · 4.8 MI E of SH 21 · Structure no. 140110026505044

Built
1948
77 years old, rebuilt 1988
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
27,289
2023 count
Owner
State
State Highway Agency

About this bridge

SH 71 over Little Alum Creek is a concrete culvert carrying SH 71 over Little Alum Creek in Bastrop County, Texas. It was built in 1948 and reconstructed in 1988, so it is 77 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 27,289 vehicles a day, roughly 10% of them trucks, projected to reach 36,021 by 2042. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSH 71
CrossesLittle Alum Creek
Location4.8 MI E of SH 21
RouteState Highway 71
StateTexas
Coordinates30.07463, -97.23778
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,289 (2023)
Projected traffic36,021 by 2042
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 over Little Alum Creek built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1988.

What condition is SH 71 over Little 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 over Little Alum Creek carry?

About 27,289 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SH 71 over Little Alum Creek?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns SH 71 over Little Alum Creek?

It is owned by the State Highway Agency.