US Bridges

Blackhawk Blvd over Cedar Gully

Good

Harris County, Texas · 0.8 MI SE of FM 2351 · Structure no. 121020AA3203001

Built
1970
55 years old, rebuilt 1986
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
6,600
2013 count
Owner
County
County Highway Agency

About this bridge

Blackhawk Blvd over Cedar Gully is a concrete culvert carrying Blackhawk Blvd over Cedar Gully in Harris County, Texas. It was built in 1970 and reconstructed in 1986, 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 6,600 vehicles a day, projected to reach 7,260 by 2035. The structure is 23 ft (7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesBlackhawk Blvd
CrossesCedar Gully
Location0.8 MI SE of FM 2351
RouteCounty Highway 0
CountyHarris County
StateTexas
Coordinates29.5444, -95.17975
Functional classRural Minor Collector

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum 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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,600 (2013)
Projected traffic7,260 by 2035
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$26,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Blackhawk Blvd over Cedar Gully built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1986.

What condition is Blackhawk Blvd over Cedar Gully 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 November 2023.

How much traffic does Blackhawk Blvd over Cedar Gully carry?

About 6,600 vehicles per day (2013 count).

How long is Blackhawk Blvd over Cedar Gully?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns Blackhawk Blvd over Cedar Gully?

It is owned by the County Highway Agency.