US Bridges

Lp 275 over Williamson Creek

Fair

Travis County, Texas · 1.0 MI S of SH 71 · Structure no. 142270001601001

Built
1934
91 years old, rebuilt 1970
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete
Length
276 ft
6 main spans
Daily traffic
29,678
2023 count
Owner
State
State Highway Agency

About this bridge

Lp 275 over Williamson Creek is a concrete tee beam carrying Lp 275 over Williamson Creek in Travis County, Texas. It was built in 1934 and reconstructed in 1970, so it is 91 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 29,678 vehicles a day, roughly 1% of them trucks, projected to reach 43,917 by 2042. The structure is 276 ft (84.1 m) long and 74 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLp 275
CrossesWilliamson Creek
Location1.0 MI S of SH 71
RouteState Highway 275
CountyTravis County
StateTexas
Coordinates30.21026, -97.77196
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable 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 typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length276 ft (84.1 m)
Longest span46 ft (14 m)
Deck width74 ft (22.6 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,678 (2023)
Projected traffic43,917 by 2042
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Lp 275 over Williamson Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1970.

What condition is Lp 275 over Williamson 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 August 2024.

How much traffic does Lp 275 over Williamson Creek carry?

About 29,678 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Lp 275 over Williamson Creek?

The structure is 276 ft (84.1 m) long with a longest span of 46 ft (14 m) and a deck 74 ft wide.

Who owns Lp 275 over Williamson Creek?

It is owned by the State Highway Agency.