US Bridges

FM 978 over Mustang Creek

Good

Madison County, Texas · 1.0 MI NW of SH 21 · Structure no. 171540055202021

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
560 ft
6 main spans
Daily traffic
1,359
2016 count
Owner
State
State Highway Agency

About this bridge

FM 978 over Mustang Creek is a prestressed concrete stringer/multi-beam or girder carrying FM 978 over Mustang Creek in Madison County, Texas. It was built in 2024, so it is 1 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,359 vehicles a day, roughly 3% of them trucks, projected to reach 1,500 by 2036. The structure is 560 ft (170.7 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM 978
CrossesMustang Creek
Location1.0 MI NW of SH 21
RouteState Highway 978
StateTexas
Coordinates30.95472, -95.93048
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable 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 spans6 (+3 approach)
Design loadHL 93
Structure length560 ft (170.7 m)
Longest span70 ft (21.3 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,359 (2016)
Projected traffic1,500 by 2036
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 978 over Mustang Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is FM 978 over Mustang Creek 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 November 2024.

How much traffic does FM 978 over Mustang Creek carry?

About 1,359 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is FM 978 over Mustang Creek?

The structure is 560 ft (170.7 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns FM 978 over Mustang Creek?

It is owned by the State Highway Agency.