US Bridges

FM 348 over Irons Bayou

Good

Rusk County, Texas · 0.45 MI E of FM 1798 · Structure no. 102010042405038

Built
1990
35 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
60 ft
4 main spans
Daily traffic
319
2023 count
Owner
State
State Highway Agency

About this bridge

FM 348 over Irons Bayou is a concrete culvert carrying FM 348 over Irons Bayou in Rusk County, Texas. It was built in 1990, so it is 35 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 319 vehicles a day, roughly 21% of them trucks, projected to reach 270 by 2033. The structure is 60 ft (18.3 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFM 348
CrossesIrons Bayou
Location0.45 MI E of FM 1798
RouteState Highway 348
StateTexas
Coordinates32.10277, -94.59873
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic319 (2023)
Projected traffic270 by 2033
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 348 over Irons Bayou built?

It was built in 1990, making it 35 years old in 2025.

What condition is FM 348 over Irons Bayou 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 2023.

How much traffic does FM 348 over Irons Bayou carry?

About 319 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is FM 348 over Irons Bayou?

The structure is 60 ft (18.3 m) long with a longest span of 10 ft (3 m).

Who owns FM 348 over Irons Bayou?

It is owned by the State Highway Agency.