US Bridges

FM 309 over Aquilla Creek

Fair

Hill County, Texas · 1.9 MI SE of FM 934 · Structure no. 091100088802009

Built
1956
69 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
200 ft
8 main spans
Daily traffic
221
2020 count
Owner
State
State Highway Agency

About this bridge

FM 309 over Aquilla Creek is a concrete slab carrying FM 309 over Aquilla Creek in Hill County, Texas. It was built in 1956, so it is 69 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 221 vehicles a day, roughly 18% of them trucks, projected to reach 368 by 2039. The structure is 200 ft (61 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFM 309
CrossesAquilla Creek
Location1.9 MI SE of FM 934
RouteState Highway 309
CountyHill County
StateTexas
Coordinates32.08081, -97.27069
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating57 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadOther
Structure length200 ft (61 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 traffic221 (2020)
Projected traffic368 by 2039
Trucks18%
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$1.4 million
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 309 over Aquilla Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is FM 309 over Aquilla 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 309 over Aquilla Creek carry?

About 221 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is FM 309 over Aquilla Creek?

The structure is 200 ft (61 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns FM 309 over Aquilla Creek?

It is owned by the State Highway Agency.