US Bridges

Lp 13 over San Antonio River

Fair

Bexar County, Texas · 0.8 MI E of SP 536 · Structure no. 150150052102036

Built
1958
67 years old, rebuilt 1966
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
344 ft
11 main spans
Daily traffic
30,709
2023 count
Owner
State
State Highway Agency

About this bridge

Lp 13 over San Antonio River is a concrete continuous slab carrying Lp 13 over San Antonio River in Bexar County, Texas. It was built in 1958 and reconstructed in 1966, so it is 67 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 30,709 vehicles a day, roughly 8% of them trucks, projected to reach 35,840 by 2033. The structure is 344 ft (104.9 m) long and 91 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLp 13
CrossesSan Antonio River
Location0.8 MI E of SP 536
RouteState Highway 13
CountyBexar County
StateTexas
Coordinates29.35134, -98.46793
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length344 ft (104.9 m)
Longest span34 ft (10.4 m)
Deck width91 ft (27.7 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,709 (2023)
Projected traffic35,840 by 2033
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$60,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lp 13 over San Antonio River built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1966.

What condition is Lp 13 over San Antonio River 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 Lp 13 over San Antonio River carry?

About 30,709 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Lp 13 over San Antonio River?

The structure is 344 ft (104.9 m) long with a longest span of 34 ft (10.4 m) and a deck 91 ft wide.

Who owns Lp 13 over San Antonio River?

It is owned by the State Highway Agency.