US Bridges

Bw 8 Nbfr over Armand Bayou

Fair

Harris County, Texas · 4.7 MI NE of IH 45 (s) · Structure no. 121020325603031

Built
1970
55 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
112 ft
1 main span
Daily traffic
12,133
2022 count
Owner
State
State Highway Agency

About this bridge

Bw 8 Nbfr over Armand Bayou is a prestressed concrete stringer/multi-beam or girder carrying Bw 8 Nbfr over Armand Bayou in Harris County, Texas. It was built in 1970, so it is 55 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 12,133 vehicles a day, roughly 7% of them trucks, projected to reach 16,986 by 2042. The structure is 112 ft (34.1 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesBw 8 Nbfr
CrossesArmand Bayou
Location4.7 MI NE of IH 45 (s)
RouteState Highway 8
CountyHarris County
StateTexas
Coordinates29.65524, -95.15576
Functional classUrban Other Principal Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length112 ft (34.1 m)
Longest span51 ft (15.5 m)
Deck width42 ft (12.8 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,133 (2022)
Projected traffic16,986 by 2042
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$9,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Bw 8 Nbfr over Armand Bayou built?

It was built in 1970, making it 55 years old in 2025.

What condition is Bw 8 Nbfr over Armand Bayou 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 2024.

How much traffic does Bw 8 Nbfr over Armand Bayou carry?

About 12,133 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Bw 8 Nbfr over Armand Bayou?

The structure is 112 ft (34.1 m) long with a longest span of 51 ft (15.5 m) and a deck 42 ft wide.

Who owns Bw 8 Nbfr over Armand Bayou?

It is owned by the State Highway Agency.