US Bridges

US183SB to SH71 WB over Carson Creek

Fair

Travis County, Texas · At US 183/SH 71 Intrchng · Structure no. 142270015201030

Built
1959
66 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
15,140
2013 count
Owner
State
State Highway Agency

About this bridge

US183SB to SH71 WB over Carson Creek is a concrete culvert carrying US183SB to SH71 WB over Carson Creek in Travis County, Texas. It was built in 1959, so it is 66 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 15,140 vehicles a day, roughly 5% of them trucks, projected to reach 21,190 by 2033. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS183SB to SH71 WB
CrossesCarson Creek
LocationAt US 183/SH 71 Intrchng
RouteU.S. Route 183
CountyTravis County
StateTexas
Coordinates30.22357, -97.68426
Functional classUrban Other Principal 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadOther
Structure length32 ft (9.8 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,140 (2013)
Projected traffic21,190 by 2033
Trucks5%
Lanes on structure2
Traffic directionTwo-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 byLocal Toll Authority
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 US183SB to SH71 WB over Carson Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is US183SB to SH71 WB over Carson 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 July 2023.

How much traffic does US183SB to SH71 WB over Carson Creek carry?

About 15,140 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is US183SB to SH71 WB over Carson Creek?

The structure is 32 ft (9.8 m) long with a longest span of 9 ft (2.7 m).

Who owns US183SB to SH71 WB over Carson Creek?

It is owned by the State Highway Agency and maintained by the Local Toll Authority.