US Bridges

FM 354 over Big Iron Ore Creek

Good

San Augustine County, Texas · 5.95 MI N of SH 21 · Structure no. 112030089502010

Built
1985
40 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
121 ft
4 main spans
Daily traffic
136
2024 count
Owner
State
State Highway Agency

About this bridge

FM 354 over Big Iron Ore Creek is a concrete stringer/multi-beam or girder carrying FM 354 over Big Iron Ore Creek in San Augustine County, Texas. It was built in 1985, so it is 40 years old, younger 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 136 vehicles a day, roughly 8% of them trucks, projected to reach 88 by 2040. The structure is 121 ft (37 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesFM 354
CrossesBig Iron Ore Creek
Location5.95 MI N of SH 21
RouteState Highway 354
StateTexas
Coordinates31.56585, -94.28947
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating67 US tons
Inventory rating40 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length121 ft (37 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic136 (2024)
Projected traffic88 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

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 FM 354 over Big Iron Ore Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is FM 354 over Big Iron Ore Creek 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 May 2024.

How much traffic does FM 354 over Big Iron Ore Creek carry?

About 136 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is FM 354 over Big Iron Ore Creek?

The structure is 121 ft (37 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns FM 354 over Big Iron Ore Creek?

It is owned by the State Highway Agency.