US Bridges

IH 35 SB over Lp 1604

Good

Bexar County, Texas · 0.00 MI NE of Lp 1604 · Structure no. 150150001703274

Built
1974
51 years old
Condition
Good
inspected May 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
210 ft
2 main spans
Daily traffic
25,473
2017 count
Owner
State
State Highway Agency

About this bridge

IH 35 SB over Lp 1604 is a prestressed concrete stringer/multi-beam or girder carrying IH 35 SB over Lp 1604 in Bexar County, Texas. It was built in 1974, so it is 51 years old, older 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 25,473 vehicles a day, roughly 29% of them trucks, projected to reach 29,100 by 2033. The structure is 210 ft (64 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 SB
CrossesLp 1604
Location0.00 MI NE of Lp 1604
RouteInterstate 35
StateTexas
Coordinates29.2794, -98.66684
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length210 ft (64 m)
Longest span70 ft (21.3 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,473 (2017)
Projected traffic29,100 by 2033
Trucks29%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 35 SB over Lp 1604 built?

It was built in 1974, making it 51 years old in 2025.

What condition is IH 35 SB over Lp 1604 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 2022.

How much traffic does IH 35 SB over Lp 1604 carry?

About 25,473 vehicles per day (2017 count), of which roughly 29% are trucks.

How long is IH 35 SB over Lp 1604?

The structure is 210 ft (64 m) long with a longest span of 70 ft (21.3 m) and a deck 42 ft wide.

Who owns IH 35 SB over Lp 1604?

It is owned by the State Highway Agency.