US Bridges

SP 537 Nb-San Pedr over US 281

Good

Bexar County, Texas · 1.45 MI NW of IH 410 · Structure no. 150150007308185

Built
1977
48 years old
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
310 ft
2 main spans
Daily traffic
16,000
2011 count
Owner
State
State Highway Agency

About this bridge

SP 537 Nb-San Pedr over US 281 is a prestressed concrete stringer/multi-beam or girder carrying SP 537 Nb-San Pedr over US 281 in Bexar County, Texas. It was built in 1977, so it is 48 years old, older 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 16,000 vehicles a day, roughly 7% of them trucks, projected to reach 27,200 by 2031. The structure is 310 ft (94.5 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSP 537 Nb-San Pedr
CrossesUS 281
Location1.45 MI NW of IH 410
RouteState Highway 537
CountyBexar County
StateTexas
Coordinates29.53748, -98.49256
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 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

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2 (+2 approach)
Design loadHS 20
Structure length310 ft (94.5 m)
Longest span115 ft (35.1 m)
Deck width58 ft (17.8 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2011)
Projected traffic27,200 by 2031
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 SP 537 Nb-San Pedr over US 281 built?

It was built in 1977, making it 48 years old in 2025.

What condition is SP 537 Nb-San Pedr over US 281 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 August 2022.

How much traffic does SP 537 Nb-San Pedr over US 281 carry?

About 16,000 vehicles per day (2011 count), of which roughly 7% are trucks.

How long is SP 537 Nb-San Pedr over US 281?

The structure is 310 ft (94.5 m) long with a longest span of 115 ft (35.1 m) and a deck 58 ft wide.

Who owns SP 537 Nb-San Pedr over US 281?

It is owned by the State Highway Agency.