US Bridges

IH 35 NB & SB over N Prong E Fk Atascosa Ri

Fair

Bexar County, Texas · 6.60 MI SW of Lp 1604 · Structure no. 150150001703053

Built
1937
88 years old, rebuilt 1974
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
27 ft
4 main spans
Daily traffic
46,194
2022 count
Owner
State
State Highway Agency

About this bridge

IH 35 NB & SB over N Prong E Fk Atascosa Ri is a concrete culvert carrying IH 35 NB & SB over N Prong E Fk Atascosa Ri in Bexar County, Texas. It was built in 1937 and reconstructed in 1974, so it is 88 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 46,194 vehicles a day, roughly 36% of them trucks, projected to reach 58,204 by 2042. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 35 NB & SB
CrossesN Prong E Fk Atascosa Ri
Location6.60 MI SW of Lp 1604
RouteInterstate 35
CountyBexar County
StateTexas
Coordinates29.2435, -98.76922
Functional classRural 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length27 ft (8.2 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic46,194 (2022)
Projected traffic58,204 by 2042
Trucks36%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 NB & SB over N Prong E Fk Atascosa Ri built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1974.

What condition is IH 35 NB & SB over N Prong E Fk Atascosa Ri 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 NB & SB over N Prong E Fk Atascosa Ri carry?

About 46,194 vehicles per day (2022 count), of which roughly 36% are trucks.

How long is IH 35 NB & SB over N Prong E Fk Atascosa Ri?

The structure is 27 ft (8.2 m) long with a longest span of 6 ft (1.8 m).

Who owns IH 35 NB & SB over N Prong E Fk Atascosa Ri?

It is owned by the State Highway Agency.