US Bridges

IH 35 NB on Ramp over R.O.W. N of Alamo ST

Good

Bexar County, Texas · 0.10 MI N of SP 536 · Structure no. 150150001710351

Built
1991
34 years old
Condition
Good
inspected May 2024
Type
Segmental Box Girder
Prestressed Concrete Continuous
Length
182 ft
2 main spans
Daily traffic
9,061
2023 count
Owner
State
State Highway Agency

About this bridge

IH 35 NB on Ramp over R.O.W. N of Alamo ST is a prestressed concrete continuous segmental box girder carrying IH 35 NB on Ramp over R.O.W. N of Alamo ST in Bexar County, Texas. It was built in 1991, so it is 34 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,061 vehicles a day, roughly 3% of them trucks, projected to reach 70 by 2030. The structure is 182 ft (55.5 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 NB on Ramp
CrossesR.O.W. N of Alamo ST
Location0.10 MI N of SP 536
RouteInterstate 35
StateTexas
Coordinates29.41533, -98.50307
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSegmental Box Girder
MaterialPrestressed Concrete Continuous
DeckOther
Main spans2
Design loadHS 20
Structure length182 ft (55.5 m)
Longest span102 ft (31.1 m)
Deck width26 ft (7.9 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,061 (2023)
Projected traffic70 by 2030
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 NB on Ramp over R.O.W. N of Alamo ST built?

It was built in 1991, making it 34 years old in 2025.

What condition is IH 35 NB on Ramp over R.O.W. N of Alamo ST in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2024.

How much traffic does IH 35 NB on Ramp over R.O.W. N of Alamo ST carry?

About 9,061 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is IH 35 NB on Ramp over R.O.W. N of Alamo ST?

The structure is 182 ft (55.5 m) long with a longest span of 102 ft (31.1 m) and a deck 26 ft wide.

Who owns IH 35 NB on Ramp over R.O.W. N of Alamo ST?

It is owned by the State Highway Agency.