US Bridges

US 181 over SP Railroad

Good

Wilson County, Texas · 1.05 MI SE of FM 541 · Structure no. 152470010004109

Built
1985
40 years old
Condition
Good
inspected July 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
225 ft
3 main spans
Daily traffic
10,251
2020 count
Owner
State
State Highway Agency

About this bridge

US 181 over SP Railroad is a prestressed concrete stringer/multi-beam or girder carrying US 181 over SP Railroad in Wilson County, Texas. It was built in 1985, so it is 40 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 10,251 vehicles a day, roughly 8% of them trucks, projected to reach 14,770 by 2033. The structure is 225 ft (68.6 m) long and 74 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesUS 181
CrossesSP Railroad
Location1.05 MI SE of FM 541
RouteU.S. Route 181
StateTexas
Coordinates29.05773, -98.07487
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span75 ft (22.9 m)
Deck width74 ft (22.6 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,251 (2020)
Projected traffic14,770 by 2033
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed14.9 mi (24 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 181 over SP Railroad built?

It was built in 1985, making it 40 years old in 2025.

What condition is US 181 over SP Railroad 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 July 2022.

How much traffic does US 181 over SP Railroad carry?

About 10,251 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is US 181 over SP Railroad?

The structure is 225 ft (68.6 m) long with a longest span of 75 ft (22.9 m) and a deck 74 ft wide.

Who owns US 181 over SP Railroad?

It is owned by the State Highway Agency.