US Bridges

IH 45 NB over Airtex Dr.

Good

Harris County, Texas · 4 MI S of FM 1960 · Structure no. 121020011005143

Built
1997
28 years old
Condition
Good
inspected September 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
260 ft
1 main span
Daily traffic
125,188
2021 count
Owner
State
State Highway Agency

About this bridge

IH 45 NB over Airtex Dr. is a prestressed concrete stringer/multi-beam or girder carrying IH 45 NB over Airtex Dr. in Harris County, Texas. It was built in 1997, so it is 28 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 125,188 vehicles a day, roughly 7% of them trucks, projected to reach 175,263 by 2041. The structure is 260 ft (79.2 m) long and 86 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 45 NB
CrossesAirtex Dr.
Location4 MI S of FM 1960
RouteInterstate 45
CountyHarris County
StateTexas
Coordinates29.98198, -95.42246
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 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

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadHS 20
Structure length260 ft (79.2 m)
Longest span120 ft (36.6 m)
Deck width86 ft (26.2 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125,188 (2021)
Projected traffic175,263 by 2041
Trucks7%
Lanes on structure5
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 statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$533,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 45 NB over Airtex Dr. built?

It was built in 1997, making it 28 years old in 2025.

What condition is IH 45 NB over Airtex Dr. 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 September 2022.

How much traffic does IH 45 NB over Airtex Dr. carry?

About 125,188 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is IH 45 NB over Airtex Dr.?

The structure is 260 ft (79.2 m) long with a longest span of 120 ft (36.6 m) and a deck 86 ft wide.

Who owns IH 45 NB over Airtex Dr.?

It is owned by the State Highway Agency.