US Bridges

W Plantation over Willow Spring Bayou Trib

Good

Harris County, Texas · 0.25 MI S of Spencer HWY · Structure no. 121020L51620231

Built
1970
55 years old
Condition
Good
inspected December 2023
Type
Slab
Prestressed Concrete
Length
75 ft
3 main spans
Daily traffic
100
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

W Plantation over Willow Spring Bayou Trib is a prestressed concrete slab carrying W Plantation over Willow Spring Bayou Trib 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 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 150 by 2040. The structure is 75 ft (22.9 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesW Plantation
CrossesWillow Spring Bayou Trib
Location0.25 MI S of Spencer HWY
RouteCity Street 0
StateTexas
Coordinates29.6605, -95.1004
Functional classUrban Local

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length75 ft (22.9 m)
Longest span25 ft (7.6 m)
Deck width49 ft (14.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic150 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
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 W Plantation over Willow Spring Bayou Trib built?

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

What condition is W Plantation over Willow Spring Bayou Trib 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 December 2023.

How much traffic does W Plantation over Willow Spring Bayou Trib carry?

About 100 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is W Plantation over Willow Spring Bayou Trib?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.6 m) and a deck 49 ft wide.

Who owns W Plantation over Willow Spring Bayou Trib?

It is owned by the City or Municipal Highway Agency.