US Bridges

IH 35 SB Low. Lev. over R.O.W. W of N St. Marys

Fair

Bexar County, Texas · 0.40 MI W of IH 37 · Structure no. 150150001710361

Built
1994
31 years old
Condition
Fair
inspected May 2024
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
375 ft
4 main spans
Daily traffic
135,478
2022 count
Owner
State
State Highway Agency

About this bridge

IH 35 SB Low. Lev. over R.O.W. W of N St. Marys is a prestressed concrete continuous segmental box girder carrying IH 35 SB Low. Lev. over R.O.W. W of N St. Marys in Bexar County, Texas. It was built in 1994, so it is 31 years old, younger 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 135,478 vehicles a day, roughly 10% of them trucks, projected to reach 189,669 by 2042. The structure is 375 ft (114.3 m) long and 38 ft wide.

Location

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CarriesIH 35 SB Low. Lev.
CrossesR.O.W. W of N St. Marys
Location0.40 MI W of IH 37
RouteInterstate 35
CountyBexar County
StateTexas
Coordinates29.44008, -98.48567
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length375 ft (114.3 m)
Longest span96 ft (29.3 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic135,478 (2022)
Projected traffic189,669 by 2042
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 IH 35 SB Low. Lev. over R.O.W. W of N St. Marys built?

It was built in 1994, making it 31 years old in 2025.

What condition is IH 35 SB Low. Lev. over R.O.W. W of N St. Marys 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 Low. Lev. over R.O.W. W of N St. Marys carry?

About 135,478 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is IH 35 SB Low. Lev. over R.O.W. W of N St. Marys?

The structure is 375 ft (114.3 m) long with a longest span of 96 ft (29.3 m) and a deck 38 ft wide.

Who owns IH 35 SB Low. Lev. over R.O.W. W of N St. Marys?

It is owned by the State Highway Agency.