US Bridges

IH 45 Nbml over Bw 8 FR

Good

Harris County, Texas · 1.80 MI NW of FM 1959 · Structure no. 121020050003314

Built
1994
31 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
466 ft
6 main spans
Daily traffic
36,392
2022 count
Owner
State
State Highway Agency

About this bridge

IH 45 Nbml over Bw 8 FR is a prestressed concrete stringer/multi-beam or girder carrying IH 45 Nbml over Bw 8 FR in Harris County, Texas. It was built in 1994, so it is 31 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 36,392 vehicles a day, roughly 8% of them trucks, projected to reach 110,890 by 2033. The structure is 466 ft (142 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 45 Nbml
CrossesBw 8 FR
Location1.80 MI NW of FM 1959
RouteInterstate 45
CountyHarris County
StateTexas
Coordinates29.60659, -95.20556
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 inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be 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, precast panels
Main spans6
Design loadHS 20
Structure length466 ft (142 m)
Longest span83 ft (25.3 m)
Deck width73 ft (22.2 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic36,392 (2022)
Projected traffic110,890 by 2033
Trucks8%
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$406,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 45 Nbml over Bw 8 FR built?

It was built in 1994, making it 31 years old in 2025.

What condition is IH 45 Nbml over Bw 8 FR 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 October 2022.

How much traffic does IH 45 Nbml over Bw 8 FR carry?

About 36,392 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is IH 45 Nbml over Bw 8 FR?

The structure is 466 ft (142 m) long with a longest span of 83 ft (25.3 m) and a deck 73 ft wide.

Who owns IH 45 Nbml over Bw 8 FR?

It is owned by the State Highway Agency.