US Bridges

FM 308 over Ash Creek

Fair

McLennan County, Texas · 3.2 MI N of FM 2311 · Structure no. 091610083404016

Built
1952
73 years old, rebuilt 1969
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
100 ft
4 main spans
Daily traffic
981
2018 count
Owner
State
State Highway Agency

About this bridge

FM 308 over Ash Creek is a concrete slab carrying FM 308 over Ash Creek in McLennan County, Texas. It was built in 1952 and reconstructed in 1969, so it is 73 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 981 vehicles a day, roughly 17% of them trucks, projected to reach 1,400 by 2037. The structure is 100 ft (30.5 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFM 308
CrossesAsh Creek
Location3.2 MI N of FM 2311
RouteState Highway 308
CountyMcLennan County
StateTexas
Coordinates31.77178, -96.99299
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating20.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length100 ft (30.5 m)
Longest span25 ft (7.6 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic981 (2018)
Projected traffic1,400 by 2037
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$600,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 308 over Ash Creek built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1969.

What condition is FM 308 over Ash Creek 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 February 2023.

How much traffic does FM 308 over Ash Creek carry?

About 981 vehicles per day (2018 count), of which roughly 17% are trucks.

How long is FM 308 over Ash Creek?

The structure is 100 ft (30.5 m) long with a longest span of 25 ft (7.6 m) and a deck 46 ft wide.

Who owns FM 308 over Ash Creek?

It is owned by the State Highway Agency.