US Bridges

FM 309 over Trib Hackberry Creek

Fair

Hill County, Texas · 1.3 MI NW of SH 22 · Structure no. 091100088802003

Built
1930
95 years old, rebuilt 1987
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
566
2020 count
Owner
State
State Highway Agency

About this bridge

FM 309 over Trib Hackberry Creek is a concrete culvert carrying FM 309 over Trib Hackberry Creek in Hill County, Texas. It was built in 1930 and reconstructed in 1987, so it is 95 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 566 vehicles a day, roughly 16% of them trucks, projected to reach 691 by 2039. The structure is 25 ft (7.6 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 309
CrossesTrib Hackberry Creek
Location1.3 MI NW of SH 22
RouteState Highway 309
CountyHill County
StateTexas
Coordinates32.01711, -97.17065
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic566 (2020)
Projected traffic691 by 2039
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 309 over Trib Hackberry Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1987.

What condition is FM 309 over Trib Hackberry 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 November 2024.

How much traffic does FM 309 over Trib Hackberry Creek carry?

About 566 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is FM 309 over Trib Hackberry Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 37 ft wide.

Who owns FM 309 over Trib Hackberry Creek?

It is owned by the State Highway Agency.