US Bridges

Spur 536 over San Antonio River

Good

Bexar County, Texas · 1.10 MI S of IH 10 · Structure no. 150150025306029

Built
1934
91 years old
Condition
Good
inspected August 2024
Type
Arch - Deck
Concrete
Length
290 ft
3 main spans
Daily traffic
9,735
2020 count
Owner
State
State Highway Agency

About this bridge

Spur 536 over San Antonio River is a concrete arch - deck carrying Spur 536 over San Antonio River in Bexar County, Texas. It was built in 1934, so it is 91 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 9,735 vehicles a day, roughly 10% of them trucks, projected to reach 8,950 by 2036. The structure is 290 ft (88.4 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSpur 536
CrossesSan Antonio River
Location1.10 MI S of IH 10
RouteState Highway 536
StateTexas
Coordinates29.37626, -98.48128
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length290 ft (88.4 m)
Longest span110 ft (33.5 m)
Deck width53 ft (16.2 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,735 (2020)
Projected traffic8,950 by 2036
Trucks10%
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 statusEligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.4 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Spur 536 over San Antonio River built?

It was built in 1934, making it 91 years old in 2025.

What condition is Spur 536 over San Antonio River 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 2024.

How much traffic does Spur 536 over San Antonio River carry?

About 9,735 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Spur 536 over San Antonio River?

The structure is 290 ft (88.4 m) long with a longest span of 110 ft (33.5 m) and a deck 53 ft wide.

Who owns Spur 536 over San Antonio River?

It is owned by the State Highway Agency.