US Bridges

SH 71 over Hamilton Creek Trib

Good

Travis County, Texas · 0.6 MI W of RM 3238 · Structure no. 142270070003040

Built
1947
78 years old, rebuilt 2015
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
45,421
2023 count
Owner
State
State Highway Agency

About this bridge

SH 71 over Hamilton Creek Trib is a concrete culvert carrying SH 71 over Hamilton Creek Trib in Travis County, Texas. It was built in 1947 and reconstructed in 2015, so it is 78 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 45,421 vehicles a day, roughly 4% of them trucks, projected to reach 31,500 by 2031. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 31.7 mi (51 km).

CarriesSH 71
CrossesHamilton Creek Trib
Location0.6 MI W of RM 3238
RouteState Highway 71
StateTexas
Coordinates30.31343, -97.97495
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length26 ft (7.9 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 traffic45,421 (2023)
Projected traffic31,500 by 2031
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 71 over Hamilton Creek Trib built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 2015.

What condition is SH 71 over Hamilton Creek Trib in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does SH 71 over Hamilton Creek Trib carry?

About 45,421 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SH 71 over Hamilton Creek Trib?

The structure is 26 ft (7.9 m) long with a longest span of 7 ft (2.1 m).

Who owns SH 71 over Hamilton Creek Trib?

It is owned by the State Highway Agency.