US Bridges

US 281 SB over Palo Blanco Creek

Fair

Bexar County, Texas · 1.65 MI N of Loop 1604 · Structure no. 150150007302093

Built
1969
56 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
156 ft
3 main spans
Daily traffic
5,898
2020 count
Owner
State
State Highway Agency

About this bridge

US 281 SB over Palo Blanco Creek is a prestressed concrete stringer/multi-beam or girder carrying US 281 SB over Palo Blanco Creek in Bexar County, Texas. It was built in 1969, so it is 56 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,898 vehicles a day, roughly 8% of them trucks, projected to reach 3,190 by 2033. The structure is 156 ft (47.5 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 281 SB
CrossesPalo Blanco Creek
Location1.65 MI N of Loop 1604
RouteU.S. Route 281
StateTexas
Coordinates29.24421, -98.47344
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length156 ft (47.5 m)
Longest span52 ft (15.9 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,898 (2020)
Projected traffic3,190 by 2033
Trucks8%
Lanes on structure2
Traffic directionOne-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 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 US 281 SB over Palo Blanco Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is US 281 SB over Palo Blanco Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does US 281 SB over Palo Blanco Creek carry?

About 5,898 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is US 281 SB over Palo Blanco Creek?

The structure is 156 ft (47.5 m) long with a longest span of 52 ft (15.9 m) and a deck 42 ft wide.

Who owns US 281 SB over Palo Blanco Creek?

It is owned by the State Highway Agency.