US Bridges

Bw 8 WB to US59 SB over US 59 Bw 8 Ramps

Fair

Harris County, Texas · BW8 US59 N Interchange · Structure no. 121020017707395

Built
2004
21 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
3,903 ft
6 main spans
Daily traffic
28,290
2021 count
Owner
State
State Highway Agency

About this bridge

Bw 8 WB to US59 SB over US 59 Bw 8 Ramps is a steel continuous box beam or girders - multiple carrying Bw 8 WB to US59 SB over US 59 Bw 8 Ramps in Harris County, Texas. It was built in 2004, so it is 21 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 28,290 vehicles a day, roughly 3% of them trucks, projected to reach 42,435 by 2041. The structure is 3,903 ft (1,189.6 m) long and 29 ft wide.

CarriesBw 8 WB to US59 SB
CrossesUS 59 Bw 8 Ramps
LocationBW8 US59 N Interchange
RouteU.S. Route 59
StateTexas
Coordinates29.94091, -95.28227
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialSteel Continuous
DeckCorrugated steel
Main spans6 (+20 approach)
Design loadHS 20
Structure length3,903 ft (1,189.6 m)
Longest span320 ft (97.5 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,290 (2021)
Projected traffic42,435 by 2041
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 Bw 8 WB to US59 SB over US 59 Bw 8 Ramps built?

It was built in 2004, making it 21 years old in 2025.

What condition is Bw 8 WB to US59 SB over US 59 Bw 8 Ramps 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 Bw 8 WB to US59 SB over US 59 Bw 8 Ramps carry?

About 28,290 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Bw 8 WB to US59 SB over US 59 Bw 8 Ramps?

The structure is 3,903 ft (1,189.6 m) long with a longest span of 320 ft (97.5 m) and a deck 29 ft wide.

Who owns Bw 8 WB to US59 SB over US 59 Bw 8 Ramps?

It is owned by the State Highway Agency.