US Bridges

FM 317 over Flat CR (spillway)

Good

Henderson County, Texas · 2.00 MI E of SH 31 · Structure no. 101080088901022

Built
1992
33 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
2,742
2020 count
Owner
State
State Highway Agency

About this bridge

FM 317 over Flat CR (spillway) is a prestressed concrete stringer/multi-beam or girder carrying FM 317 over Flat CR (spillway) in Henderson County, Texas. It was built in 1992, so it is 33 years old, younger 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 2,742 vehicles a day, roughly 6% of them trucks, projected to reach 2,610 by 2033. The structure is 60 ft (18.3 m) long and 42 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM 317
CrossesFlat CR (spillway)
Location2.00 MI E of SH 31
RouteState Highway 317
StateTexas
Coordinates32.23458, -95.7774
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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width42 ft (12.9 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,742 (2020)
Projected traffic2,610 by 2033
Trucks6%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 317 over Flat CR (spillway) built?

It was built in 1992, making it 33 years old in 2025.

What condition is FM 317 over Flat CR (spillway) 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 February 2023.

How much traffic does FM 317 over Flat CR (spillway) carry?

About 2,742 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is FM 317 over Flat CR (spillway)?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 42 ft wide.

Who owns FM 317 over Flat CR (spillway)?

It is owned by the State Highway Agency.