US Bridges

IH35 NB to SL20 WB over IH 35

Fair

Webb County, Texas · 6.12 MI North of US 59 · Structure no. 222400001806170

Built
2007
18 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,344 ft
8 main spans
Daily traffic
8,300
2012 count
Owner
State
State Highway Agency

About this bridge

IH35 NB to SL20 WB over IH 35 is a steel continuous stringer/multi-beam or girder carrying IH35 NB to SL20 WB over IH 35 in Webb County, Texas. It was built in 2007, so it is 18 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 8,300 vehicles a day, roughly 24% of them trucks, projected to reach 12,550 by 2032. The structure is 2,344 ft (714.5 m) long and 28 ft wide.

CarriesIH35 NB to SL20 WB
CrossesIH 35
Location6.12 MI North of US 59
RouteInterstate 35
StateTexas
Coordinates27.60308, -99.49525
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8 (+7 approach)
Design loadHS 25 or greater
Structure length2,344 ft (714.5 m)
Longest span245 ft (74.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic8,300 (2012)
Projected traffic12,550 by 2032
Trucks24%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH35 NB to SL20 WB over IH 35 built?

It was built in 2007, making it 18 years old in 2025.

What condition is IH35 NB to SL20 WB over IH 35 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 October 2024.

How much traffic does IH35 NB to SL20 WB over IH 35 carry?

About 8,300 vehicles per day (2012 count), of which roughly 24% are trucks.

How long is IH35 NB to SL20 WB over IH 35?

The structure is 2,344 ft (714.5 m) long with a longest span of 245 ft (74.7 m) and a deck 28 ft wide.

Who owns IH35 NB to SL20 WB over IH 35?

It is owned by the State Highway Agency.