US Bridges

FM 315 over Flat Creek

Fair

Henderson County, Texas · 7.80 MI S of SH 31 · Structure no. 101080055902017

Built
1971
54 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
3,520 ft
88 main spans
Daily traffic
3,444
2023 count
Owner
State
State Highway Agency

About this bridge

FM 315 over Flat Creek is a concrete stringer/multi-beam or girder carrying FM 315 over Flat Creek in Henderson County, Texas. It was built in 1971, so it is 54 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 3,444 vehicles a day, roughly 10% of them trucks, projected to reach 4,940 by 2033. The structure is 3,520 ft (1,072.9 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesFM 315
CrossesFlat Creek
Location7.80 MI S of SH 31
RouteState Highway 315
CountyHenderson County
StateTexas
Coordinates32.20087, -95.50991
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans88
Design loadHS 20
Structure length3,520 ft (1,072.9 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,444 (2023)
Projected traffic4,940 by 2033
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$229,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 315 over Flat Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is FM 315 over Flat 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 315 over Flat Creek carry?

About 3,444 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is FM 315 over Flat Creek?

The structure is 3,520 ft (1,072.9 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns FM 315 over Flat Creek?

It is owned by the State Highway Agency.