US Bridges

FM 343 over Angelina River

Fair

Nacogdoches County, Texas · 20.3 MI NW of US 59 · Structure no. 111740092602005

Built
1967
58 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
470 ft
3 main spans
Daily traffic
218
2020 count
Owner
State
State Highway Agency

About this bridge

FM 343 over Angelina River is a steel continuous stringer/multi-beam or girder carrying FM 343 over Angelina River in Nacogdoches County, Texas. It was built in 1967, so it is 58 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 218 vehicles a day, roughly 6% of them trucks, projected to reach 305 by 2040. The structure is 470 ft (143.3 m) long and 28 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesFM 343
CrossesAngelina River
Location20.3 MI NW of US 59
RouteState Highway 343
CountyNacogdoches County
StateTexas
Coordinates31.7533, -94.96052
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: 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 rating43 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+6 approach)
Design loadH 15
Structure length470 ft (143.3 m)
Longest span90 ft (27.4 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic218 (2020)
Projected traffic305 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 FM 343 over Angelina River built?

It was built in 1967, making it 58 years old in 2025.

What condition is FM 343 over Angelina 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 March 2024.

How much traffic does FM 343 over Angelina River carry?

About 218 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is FM 343 over Angelina River?

The structure is 470 ft (143.3 m) long with a longest span of 90 ft (27.4 m) and a deck 28 ft wide.

Who owns FM 343 over Angelina River?

It is owned by the State Highway Agency.