US Bridges

SH 31 over Pin Oak Creek Tributary

Good

Hill County, Texas · 0.76 MI SW of SH 171 · Structure no. 091100016202409

Built
2021
4 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
41 ft
4 main spans
Daily traffic
7,200
2017 count
Owner
State
State Highway Agency

About this bridge

SH 31 over Pin Oak Creek Tributary is a concrete culvert carrying SH 31 over Pin Oak Creek Tributary in Hill County, Texas. It was built in 2021, so it is 4 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 7,200 vehicles a day, roughly 16% of them trucks, projected to reach 9,900 by 2037. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 31
CrossesPin Oak Creek Tributary
Location0.76 MI SW of SH 171
RouteState Highway 31
StateTexas
Coordinates31.83467, -96.79916
Functional classRural Principal Arterial - Other

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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHL 93
Structure length41 ft (12.5 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,200 (2017)
Projected traffic9,900 by 2037
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 SH 31 over Pin Oak Creek Tributary built?

It was built in 2021, making it 4 years old in 2025.

What condition is SH 31 over Pin Oak Creek Tributary 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 2023.

How much traffic does SH 31 over Pin Oak Creek Tributary carry?

About 7,200 vehicles per day (2017 count), of which roughly 16% are trucks.

How long is SH 31 over Pin Oak Creek Tributary?

The structure is 41 ft (12.5 m) long with a longest span of 8 ft (2.4 m).

Who owns SH 31 over Pin Oak Creek Tributary?

It is owned by the State Highway Agency.