US Bridges

FM 946 over Mccombs Creek

Good

San Jacinto County, Texas · 4.05 MI S of US 190 · Structure no. 112040093905005

Built
1988
37 years old
Condition
Good
inspected March 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
734
2020 count
Owner
State
State Highway Agency

About this bridge

FM 946 over Mccombs Creek is a concrete culvert carrying FM 946 over Mccombs Creek in San Jacinto 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 734 vehicles a day, roughly 15% of them trucks, projected to reach 980 by 2033. The structure is 32 ft (9.8 m) long and 61 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFM 946
CrossesMccombs Creek
Location4.05 MI S of US 190
RouteState Highway 946
StateTexas
Coordinates30.71038, -95.27517
Functional classRural Minor 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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width61 ft (18.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic734 (2020)
Projected traffic980 by 2033
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 946 over Mccombs Creek built?

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

What condition is FM 946 over Mccombs 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 March 2024.

How much traffic does FM 946 over Mccombs Creek carry?

About 734 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is FM 946 over Mccombs Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m) and a deck 61 ft wide.

Who owns FM 946 over Mccombs Creek?

It is owned by the State Highway Agency.