US Bridges

FM 308 over Trib Little Tehuacana CR

Fair

McLennan County, Texas · 0.8 MI NE of IH 35 · Structure no. 091610083404007

Built
1914
111 years old, rebuilt 1968
Condition
Fair
inspected January 2023
Type
Culvert
Concrete
Length
47 ft
4 main spans
Daily traffic
2,315
2018 count
Owner
State
State Highway Agency

About this bridge

FM 308 over Trib Little Tehuacana CR is a concrete culvert carrying FM 308 over Trib Little Tehuacana CR in McLennan County, Texas. It was built in 1914 and reconstructed in 1968, so it is 111 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 2,315 vehicles a day, roughly 10% of them trucks, projected to reach 3,220 by 2033. The structure is 47 ft (14.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesFM 308
CrossesTrib Little Tehuacana CR
Location0.8 MI NE of IH 35
RouteState Highway 308
CountyMcLennan County
StateTexas
Coordinates31.67759, -97.08847
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 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 loadUnknown
Structure length47 ft (14.3 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 traffic2,315 (2018)
Projected traffic3,220 by 2033
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 308 over Trib Little Tehuacana CR built?

It was built in 1914, making it 111 years old in 2025. It was reconstructed in 1968.

What condition is FM 308 over Trib Little Tehuacana CR 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 January 2023.

How much traffic does FM 308 over Trib Little Tehuacana CR carry?

About 2,315 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is FM 308 over Trib Little Tehuacana CR?

The structure is 47 ft (14.3 m) long with a longest span of 10 ft (3 m).

Who owns FM 308 over Trib Little Tehuacana CR?

It is owned by the State Highway Agency.