US Bridges

FM 308 over Bynum Creek Relief

Good

Hill County, Texas · 0.7 MI N of SH 171 · Structure no. 091100083402026

Built
1952
73 years old
Condition
Good
inspected January 2023
Type
Slab
Concrete
Length
75 ft
3 main spans
Daily traffic
868
2020 count
Owner
State
State Highway Agency

About this bridge

FM 308 over Bynum Creek Relief is a concrete slab carrying FM 308 over Bynum Creek Relief in Hill County, Texas. It was built in 1952, 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 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 868 vehicles a day, roughly 7% of them trucks, projected to reach 990 by 2033. The structure is 75 ft (22.9 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 308
CrossesBynum Creek Relief
Location0.7 MI N of SH 171
RouteState Highway 308
CountyHill County
StateTexas
Coordinates31.92533, -96.89077
Functional classRural Major 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 inspectionJanuary 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating23 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length75 ft (22.9 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic868 (2020)
Projected traffic990 by 2033
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed3.1 mi (5 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$1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 308 over Bynum Creek Relief built?

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

What condition is FM 308 over Bynum Creek Relief 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 January 2023.

How much traffic does FM 308 over Bynum Creek Relief carry?

About 868 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is FM 308 over Bynum Creek Relief?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns FM 308 over Bynum Creek Relief?

It is owned by the State Highway Agency.