US Bridges

SH 31 WB over Trinity River

Fair

Henderson County, Texas · 0.4 MI W of SH 274 · Structure no. 101080016303040

Built
1971
54 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
3,710 ft
3 main spans
Daily traffic
3,723
2019 count
Owner
State
State Highway Agency

About this bridge

SH 31 WB over Trinity River is a steel continuous stringer/multi-beam or girder carrying SH 31 WB over Trinity River in Henderson County, Texas. It was built in 1971, so it is 54 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 3,723 vehicles a day, roughly 16% of them trucks, projected to reach 4,910 by 2039. The structure is 3,710 ft (1,130.8 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 31 WB
CrossesTrinity River
Location0.4 MI W of SH 274
RouteState Highway 31
CountyHenderson County
StateTexas
Coordinates32.14825, -96.1061
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+37 approach)
Design loadHS 20
Structure length3,710 ft (1,130.8 m)
Longest span310 ft (94.5 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,723 (2019)
Projected traffic4,910 by 2039
Trucks16%
Lanes on structure2
Traffic directionOne-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 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 SH 31 WB over Trinity River built?

It was built in 1971, making it 54 years old in 2025.

What condition is SH 31 WB over Trinity River 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 February 2023.

How much traffic does SH 31 WB over Trinity River carry?

About 3,723 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is SH 31 WB over Trinity River?

The structure is 3,710 ft (1,130.8 m) long with a longest span of 310 ft (94.5 m) and a deck 44 ft wide.

Who owns SH 31 WB over Trinity River?

It is owned by the State Highway Agency.