US Bridges

FM 391 over Little Pin Oak Creek

Poor

Robertson County, Texas · 2.5 MI E of US 190 · Structure no. 171980026206028

Built
1947
78 years old
Condition
Poor
inspected November 2024
Type
Slab
Concrete
Length
75 ft
3 main spans
Daily traffic
750
2023 count
Owner
State
State Highway Agency

About this bridge

FM 391 over Little Pin Oak Creek is a concrete slab carrying FM 391 over Little Pin Oak Creek in Robertson County, Texas. It was built in 1947, so it is 78 years old, older 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. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 750 vehicles a day, roughly 13% of them trucks, projected to reach 900 by 2042. The structure is 75 ft (22.9 m) long and 25 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFM 391
CrossesLittle Pin Oak Creek
Location2.5 MI E of US 190
RouteState Highway 391
StateTexas
Coordinates30.88494, -96.55182
Functional classRural Major Collector

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating56 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length75 ft (22.9 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic750 (2023)
Projected traffic900 by 2042
Trucks13%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$133,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 391 over Little Pin Oak Creek built?

It was built in 1947, making it 78 years old in 2025.

What condition is FM 391 over Little Pin Oak Creek 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 November 2024.

How much traffic does FM 391 over Little Pin Oak Creek carry?

About 750 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is FM 391 over Little Pin Oak Creek?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns FM 391 over Little Pin Oak Creek?

It is owned by the State Highway Agency.