US Bridges

IH 35 SB over Leon Creek / Cassin RD

Fair

Bexar County, Texas · 1.70 MI NE of IH 410 · Structure no. 150150001709111

Built
1956
69 years old, rebuilt 1989
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
367 ft
6 main spans
Daily traffic
48,778
2022 count
Owner
State
State Highway Agency

About this bridge

IH 35 SB over Leon Creek / Cassin RD is a steel continuous stringer/multi-beam or girder carrying IH 35 SB over Leon Creek / Cassin RD in Bexar County, Texas. It was built in 1956 and reconstructed in 1989, so it is 69 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 48,778 vehicles a day, roughly 26% of them trucks, projected to reach 64,387 by 2042. The structure is 367 ft (111.9 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 35 SB
CrossesLeon Creek / Cassin RD
Location1.70 MI NE of IH 410
RouteInterstate 35
CountyBexar County
StateTexas
Coordinates29.32967, -98.58529
Functional classUrban Principal Arterial - Interstate

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length367 ft (111.9 m)
Longest span71 ft (21.6 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,778 (2022)
Projected traffic64,387 by 2042
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 35 SB over Leon Creek / Cassin RD built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1989.

What condition is IH 35 SB over Leon Creek / Cassin RD 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 May 2024.

How much traffic does IH 35 SB over Leon Creek / Cassin RD carry?

About 48,778 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is IH 35 SB over Leon Creek / Cassin RD?

The structure is 367 ft (111.9 m) long with a longest span of 71 ft (21.6 m) and a deck 42 ft wide.

Who owns IH 35 SB over Leon Creek / Cassin RD?

It is owned by the State Highway Agency.