US Bridges

Robbins Sl/Cr 391 over Little Robbins Slough

Poor

Matagorda County, Texas · 4.22 MI E of FM 1095 · Structure no. 131580AA0455001

Built
1991
34 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
105 ft
7 main spans
Daily traffic
32
2022 count
Owner
County
County Highway Agency

About this bridge

Robbins Sl/Cr 391 over Little Robbins Slough is a wood or timber stringer/multi-beam or girder carrying Robbins Sl/Cr 391 over Little Robbins Slough in Matagorda County, Texas. It was built in 1991, so it is 34 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 32 vehicles a day, roughly 3% of them trucks, projected to reach 78 by 2042. The structure is 105 ft (32 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesRobbins Sl/Cr 391
CrossesLittle Robbins Slough
Location4.22 MI E of FM 1095
RouteCounty Highway 391
StateTexas
Coordinates28.73405, -96.05663
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating39 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans7
Design loadUnknown
Structure length105 ft (32 m)
Longest span15 ft (4.6 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32 (2022)
Projected traffic78 by 2042
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Robbins Sl/Cr 391 over Little Robbins Slough built?

It was built in 1991, making it 34 years old in 2025.

What condition is Robbins Sl/Cr 391 over Little Robbins Slough in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does Robbins Sl/Cr 391 over Little Robbins Slough carry?

About 32 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Robbins Sl/Cr 391 over Little Robbins Slough?

The structure is 105 ft (32 m) long with a longest span of 15 ft (4.6 m) and a deck 24 ft wide.

Who owns Robbins Sl/Cr 391 over Little Robbins Slough?

It is owned by the County Highway Agency.