US Bridges

US 380 over Tonk Creek

Fair

Stonewall County, Texas · 4.45 MI E of US 83 · Structure no. 082170010606025

Built
1936
89 years old, rebuilt 1962
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete
Length
143 ft
5 main spans
Daily traffic
930
2020 count
Owner
State
State Highway Agency

About this bridge

US 380 over Tonk Creek is a concrete tee beam carrying US 380 over Tonk Creek in Stonewall County, Texas. It was built in 1936 and reconstructed in 1962, so it is 89 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 5 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 930 vehicles a day, roughly 13% of them trucks, projected to reach 1,630 by 2033. The structure is 143 ft (43.6 m) long and 42 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesUS 380
CrossesTonk Creek
Location4.45 MI E of US 83
RouteU.S. Route 380
StateTexas
Coordinates33.12744, -100.15404
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 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
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length143 ft (43.6 m)
Longest span29 ft (8.8 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic930 (2020)
Projected traffic1,630 by 2033
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

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 US 380 over Tonk Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1962.

What condition is US 380 over Tonk 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 March 2023.

How much traffic does US 380 over Tonk Creek carry?

About 930 vehicles per day (2020 count), of which roughly 13% are trucks.

How long is US 380 over Tonk Creek?

The structure is 143 ft (43.6 m) long with a longest span of 29 ft (8.8 m) and a deck 42 ft wide.

Who owns US 380 over Tonk Creek?

It is owned by the State Highway Agency.