US Bridges

IH 45 Hov over IH 45 Nbml

Fair

Harris County, Texas · 2.00 MI SE of US 59 · Structure no. 121020050003269

Built
1985
40 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,570 ft
3 main spans
Daily traffic
1,446
2023 count
Owner
State
State Highway Agency

About this bridge

IH 45 Hov over IH 45 Nbml is a steel continuous stringer/multi-beam or girder carrying IH 45 Hov over IH 45 Nbml in Harris County, Texas. It was built in 1985, so it is 40 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 1,446 vehicles a day, roughly 6% of them trucks, projected to reach 31,310 by 2034. The structure is 1,570 ft (478.5 m) long and 23 ft wide.

Location

Open in Google Maps
CarriesIH 45 Hov
CrossesIH 45 Nbml
Location2.00 MI SE of US 59
RouteInterstate 45
CountyHarris County
StateTexas
Coordinates29.72578, -95.33314
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+19 approach)
Design loadHS 20
Structure length1,570 ft (478.5 m)
Longest span75 ft (22.9 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,446 (2023)
Projected traffic31,310 by 2034
Trucks6%
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 IH 45 Hov over IH 45 Nbml built?

It was built in 1985, making it 40 years old in 2025.

What condition is IH 45 Hov over IH 45 Nbml 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 IH 45 Hov over IH 45 Nbml carry?

About 1,446 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is IH 45 Hov over IH 45 Nbml?

The structure is 1,570 ft (478.5 m) long with a longest span of 75 ft (22.9 m) and a deck 23 ft wide.

Who owns IH 45 Hov over IH 45 Nbml?

It is owned by the State Highway Agency.