US Bridges

FM 3156 over Hardeman Slough

Good

Matagorda County, Texas · 3.85 MI E of SH 60 · Structure no. 131580322401001

Built
1976
49 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
932
2022 count
Owner
State
State Highway Agency

About this bridge

FM 3156 over Hardeman Slough is a concrete culvert carrying FM 3156 over Hardeman Slough in Matagorda County, Texas. It was built in 1976, so it is 49 years old, older 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 932 vehicles a day, roughly 12% of them trucks, projected to reach 1,417 by 2042. The structure is 22 ft (6.7 m) long and 57 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesFM 3156
CrossesHardeman Slough
Location3.85 MI E of SH 60
RouteState Highway 3156
StateTexas
Coordinates29.05464, -95.93305
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 inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width57 ft (17.4 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic932 (2022)
Projected traffic1,417 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 3156 over Hardeman Slough built?

It was built in 1976, making it 49 years old in 2025.

What condition is FM 3156 over Hardeman Slough 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 2024.

How much traffic does FM 3156 over Hardeman Slough carry?

About 932 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is FM 3156 over Hardeman Slough?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 57 ft wide.

Who owns FM 3156 over Hardeman Slough?

It is owned by the State Highway Agency.