US Bridges

US 79 NB over Trinity River

Fair

Anderson County, Texas · 0.0 MI E of Freestone C/L · Structure no. 100010020507062

Built
1995
30 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,710 ft
2 main spans
Daily traffic
4,452
2023 count
Owner
State
State Highway Agency

About this bridge

US 79 NB over Trinity River is a steel continuous stringer/multi-beam or girder carrying US 79 NB over Trinity River in Anderson County, Texas. It was built in 1995, so it is 30 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 4,452 vehicles a day, roughly 18% of them trucks, projected to reach 6,350 by 2033. The structure is 1,710 ft (521.2 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesUS 79 NB
CrossesTrinity River
Location0.0 MI E of Freestone C/L
RouteU.S. Route 79
CountyAnderson County
StateTexas
Coordinates31.64832, -95.79129
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, precast panels
Main spans2 (+13 approach)
Design loadHS 20
Structure length1,710 ft (521.2 m)
Longest span205 ft (62.5 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,452 (2023)
Projected traffic6,350 by 2033
Trucks18%
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 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 US 79 NB over Trinity River built?

It was built in 1995, making it 30 years old in 2025.

What condition is US 79 NB 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 December 2022.

How much traffic does US 79 NB over Trinity River carry?

About 4,452 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is US 79 NB over Trinity River?

The structure is 1,710 ft (521.2 m) long with a longest span of 205 ft (62.5 m) and a deck 40 ft wide.

Who owns US 79 NB over Trinity River?

It is owned by the State Highway Agency.