US Bridges

FM 1978 over Little Cottonwood Creek

Good

Guadalupe County, Texas · 1.54 MI SW of FM 621 · Structure no. 150950189702001

Built
1988
37 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
89 ft
6 main spans
Daily traffic
2,097
2020 count
Owner
State
State Highway Agency

About this bridge

FM 1978 over Little Cottonwood Creek is a concrete culvert carrying FM 1978 over Little Cottonwood Creek in Guadalupe County, Texas. It was built in 1988, so it is 37 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 2,097 vehicles a day, roughly 23% of them trucks, projected to reach 2,870 by 2033. The structure is 89 ft (27.1 m) long and 32 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFM 1978
CrossesLittle Cottonwood Creek
Location1.54 MI SW of FM 621
RouteState Highway 1978
StateTexas
Coordinates29.80913, -97.91285
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length89 ft (27.1 m)
Longest span10 ft (3 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,097 (2020)
Projected traffic2,870 by 2033
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 1978 over Little Cottonwood Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is FM 1978 over Little Cottonwood 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 July 2024.

How much traffic does FM 1978 over Little Cottonwood Creek carry?

About 2,097 vehicles per day (2020 count), of which roughly 23% are trucks.

How long is FM 1978 over Little Cottonwood Creek?

The structure is 89 ft (27.1 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns FM 1978 over Little Cottonwood Creek?

It is owned by the State Highway Agency.