US Bridges

Bw 8 Nbml over Brays Bayou

Good

Harris County, Texas · 2.4 MI N of US 59 · Structure no. 121020325601135

Built
1986
39 years old, rebuilt 2004
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
165 ft
3 main spans
Daily traffic
142,789
2023 count
Owner
Toll Authority
Local Toll Authority

About this bridge

Bw 8 Nbml over Brays Bayou is a prestressed concrete stringer/multi-beam or girder carrying Bw 8 Nbml over Brays Bayou in Harris County, Texas. It was built in 1986 and reconstructed in 2004, so it is 39 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 142,789 vehicles a day, roughly 7% of them trucks, projected to reach 199,905 by 2042. The structure is 165 ft (50.3 m) long and 75 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBw 8 Nbml
CrossesBrays Bayou
Location2.4 MI N of US 59
StateTexas
Coordinates29.69528, -95.55696
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length165 ft (50.3 m)
Longest span65 ft (19.8 m)
Deck width75 ft (23 m)
Roadway width73 ft (22.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic142,789 (2023)
Projected traffic199,905 by 2042
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bw 8 Nbml over Brays Bayou built?

It was built in 1986, making it 39 years old in 2025. It was reconstructed in 2004.

What condition is Bw 8 Nbml over Brays Bayou 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 August 2024.

How much traffic does Bw 8 Nbml over Brays Bayou carry?

About 142,789 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Bw 8 Nbml over Brays Bayou?

The structure is 165 ft (50.3 m) long with a longest span of 65 ft (19.8 m) and a deck 75 ft wide.

Who owns Bw 8 Nbml over Brays Bayou?

It is owned by the Local Toll Authority.