US Bridges

Gregory Blvd over Willow Waterhole Bayou

Good

Harris County, Texas · 0.24 MI E of Mclain Blvd · Structure no. 121020R00525001

Built
1960
65 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
1,840
2011 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Gregory Blvd over Willow Waterhole Bayou is a concrete culvert carrying Gregory Blvd over Willow Waterhole Bayou in Harris County, Texas. It was built in 1960, so it is 65 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 1,840 vehicles a day, projected to reach 500 by 2031. The structure is 22 ft (6.7 m) long and 80 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGregory Blvd
CrossesWillow Waterhole Bayou
Location0.24 MI E of Mclain Blvd
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.6343, -95.5153
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width80 ft (24.3 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,840 (2011)
Projected traffic500 by 2031
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$3,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Gregory Blvd over Willow Waterhole Bayou built?

It was built in 1960, making it 65 years old in 2025.

What condition is Gregory Blvd over Willow Waterhole 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 September 2023.

How much traffic does Gregory Blvd over Willow Waterhole Bayou carry?

About 1,840 vehicles per day (2011 count).

How long is Gregory Blvd over Willow Waterhole Bayou?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m) and a deck 80 ft wide.

Who owns Gregory Blvd over Willow Waterhole Bayou?

It is owned by the Town or Township Highway Agency.