US Bridges

IH 35 NB over Airport Blvd & SP RR

Fair

Travis County, Texas · 1.5 MI S of US 290 · Structure no. 142270001513510

Built
1972
53 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,637 ft
17 main spans
Daily traffic
3,439
2023 count
Owner
State
State Highway Agency

About this bridge

IH 35 NB over Airport Blvd & SP RR is a prestressed concrete stringer/multi-beam or girder carrying IH 35 NB over Airport Blvd & SP RR in Travis County, Texas. It was built in 1972, so it is 53 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 3,439 vehicles a day, roughly 12% of them trucks, projected to reach 93,020 by 2035. The structure is 1,637 ft (499 m) long and 39 ft wide.

Location

Open in Google Maps
CarriesIH 35 NB
CrossesAirport Blvd & SP RR
Location1.5 MI S of US 290
RouteInterstate 35
CountyTravis County
StateTexas
Coordinates30.3021, -97.71503
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans17
Design loadHS 20
Structure length1,637 ft (499 m)
Longest span115 ft (35.1 m)
Deck width39 ft (11.8 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,439 (2023)
Projected traffic93,020 by 2035
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and railroad
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 NB over Airport Blvd & SP RR built?

It was built in 1972, making it 53 years old in 2025.

What condition is IH 35 NB over Airport Blvd & SP RR 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 August 2023.

How much traffic does IH 35 NB over Airport Blvd & SP RR carry?

About 3,439 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is IH 35 NB over Airport Blvd & SP RR?

The structure is 1,637 ft (499 m) long with a longest span of 115 ft (35.1 m) and a deck 39 ft wide.

Who owns IH 35 NB over Airport Blvd & SP RR?

It is owned by the State Highway Agency.