US Bridges

IH 35 Nbml over Somerset RD

Fair

Bexar County, Texas · 2.80 MI S of Lp 13 · Structure no. 150150001709139

Built
1960
65 years old, rebuilt 1989
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
598 ft
4 main spans
Daily traffic
48,778
2022 count
Owner
State
State Highway Agency

About this bridge

IH 35 Nbml over Somerset RD is a steel continuous stringer/multi-beam or girder carrying IH 35 Nbml over Somerset RD in Bexar County, Texas. It was built in 1960 and reconstructed in 1989, so it is 65 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 5 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 598 ft (182.3 m) long and 42 ft wide.

CarriesIH 35 Nbml
CrossesSomerset RD
Location2.80 MI S of Lp 13
RouteInterstate 35
StateTexas
Coordinates29.33708, -98.56668
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating31 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+6 approach)
Design loadHS 20
Structure length598 ft (182.3 m)
Longest span78 ft (23.8 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 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
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 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 Nbml over Somerset RD built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1989.

What condition is IH 35 Nbml over Somerset 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 June 2024.

How much traffic does IH 35 Nbml over Somerset RD carry?

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

How long is IH 35 Nbml over Somerset RD?

The structure is 598 ft (182.3 m) long with a longest span of 78 ft (23.8 m) and a deck 42 ft wide.

Who owns IH 35 Nbml over Somerset RD?

It is owned by the State Highway Agency.