US Bridges

SP 536 (alamo St) over IH 35 Lower Level

Fair

Bexar County, Texas · 1.4 MI N of US 90 · Structure no. 150150001710080

Built
1952
73 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
106 ft
2 main spans
Daily traffic
173,066
2022 count
Owner
State
State Highway Agency

About this bridge

SP 536 (alamo St) over IH 35 Lower Level is a concrete continuous slab carrying SP 536 (alamo St) over IH 35 Lower Level in Bexar County, Texas. It was built in 1952, so it is 73 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 173,066 vehicles a day, roughly 9% of them trucks, projected to reach 242,292 by 2042. The structure is 106 ft (32.3 m) long and 61 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSP 536 (alamo St)
CrossesIH 35 Lower Level
Location1.4 MI N of US 90
RouteState Highway 536
CountyBexar County
StateTexas
Coordinates29.41429, -98.50445
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating30 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length106 ft (32.3 m)
Longest span50 ft (15.2 m)
Deck width61 ft (18.6 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deck16 ft (4.8 m)

Traffic and service

Average daily traffic173,066 (2022)
Projected traffic242,292 by 2042
Trucks9%
Lanes on structure4
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$13,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SP 536 (alamo St) over IH 35 Lower Level built?

It was built in 1952, making it 73 years old in 2025.

What condition is SP 536 (alamo St) over IH 35 Lower Level 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 June 2024.

How much traffic does SP 536 (alamo St) over IH 35 Lower Level carry?

About 173,066 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is SP 536 (alamo St) over IH 35 Lower Level?

The structure is 106 ft (32.3 m) long with a longest span of 50 ft (15.2 m) and a deck 61 ft wide.

Who owns SP 536 (alamo St) over IH 35 Lower Level?

It is owned by the State Highway Agency.