US Bridges

Williamson RD over Cowpen Creek Tributary

Fair

Travis County, Texas · 0.3 MI NW of Elm Grove · Structure no. 142270AA1445001

Built
1990
35 years old
Condition
Fair
inspected March 2024
Type
Culvert
Steel
Length
30 ft
3 main spans
Daily traffic
100
2010 count
Owner
County
County Highway Agency

About this bridge

Williamson RD over Cowpen Creek Tributary is a steel culvert carrying Williamson RD over Cowpen Creek Tributary in Travis County, Texas. It was built in 1990, so it is 35 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 100 vehicles a day, projected to reach 200 by 2032. The structure is 30 ft (9 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesWilliamson RD
CrossesCowpen Creek Tributary
Location0.3 MI NW of Elm Grove
RouteCounty Highway 0
StateTexas
Coordinates30.03972, -97.71314
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadUnknown
Structure length30 ft (9 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2010)
Projected traffic200 by 2032
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Williamson RD over Cowpen Creek Tributary built?

It was built in 1990, making it 35 years old in 2025.

What condition is Williamson RD over Cowpen Creek Tributary 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 March 2024.

How much traffic does Williamson RD over Cowpen Creek Tributary carry?

About 100 vehicles per day (2010 count).

How long is Williamson RD over Cowpen Creek Tributary?

The structure is 30 ft (9 m) long with a longest span of 7 ft (2.1 m).

Who owns Williamson RD over Cowpen Creek Tributary?

It is owned by the County Highway Agency.