US Bridges

US 281 SB over Olmos Basin&city Sts

Fair

Bexar County, Texas · 1.20 MI S of Basse RD · Structure no. 150150007308140

Built
1978
47 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
3,989 ft
34 main spans
Daily traffic
69,271
2023 count
Owner
State
State Highway Agency

About this bridge

US 281 SB over Olmos Basin&city Sts is a prestressed concrete stringer/multi-beam or girder carrying US 281 SB over Olmos Basin&city Sts in Bexar County, Texas. It was built in 1978, so it is 47 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 5 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 69,271 vehicles a day, roughly 3% of them trucks, projected to reach 96,980 by 2042. The structure is 3,989 ft (1,215.8 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 281 SB
CrossesOlmos Basin&city Sts
Location1.20 MI S of Basse RD
RouteU.S. Route 281
StateTexas
Coordinates29.47237, -98.47803
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: 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 spans34 (+2 approach)
Design loadHS 20
Structure length3,989 ft (1,215.8 m)
Longest span123 ft (37.5 m)
Deck width59 ft (18 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,271 (2023)
Projected traffic96,980 by 2042
Trucks3%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 281 SB over Olmos Basin&city Sts built?

It was built in 1978, making it 47 years old in 2025.

What condition is US 281 SB over Olmos Basin&city Sts 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 August 2024.

How much traffic does US 281 SB over Olmos Basin&city Sts carry?

About 69,271 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is US 281 SB over Olmos Basin&city Sts?

The structure is 3,989 ft (1,215.8 m) long with a longest span of 123 ft (37.5 m) and a deck 59 ft wide.

Who owns US 281 SB over Olmos Basin&city Sts?

It is owned by the State Highway Agency.