US Bridges

Leffingwell ST over Hunting Bayou

Good

Harris County, Texas · 0.1 MI S of IH 610 · Structure no. 121020B38913931

Built
1989
36 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
82 ft
2 main spans
Daily traffic
500
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Leffingwell ST over Hunting Bayou is a prestressed concrete box beam or girders - multiple carrying Leffingwell ST over Hunting Bayou in Harris County, Texas. It was built in 1989, so it is 36 years old, younger 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 500 vehicles a day, projected to reach 600 by 2031. The structure is 82 ft (25 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLeffingwell ST
CrossesHunting Bayou
Location0.1 MI S of IH 610
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.80657, -95.32978
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length82 ft (25 m)
Longest span42 ft (12.8 m)
Deck width40 ft (12.3 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2011)
Projected traffic600 by 2031
Trucks0%
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 Leffingwell ST over Hunting Bayou built?

It was built in 1989, making it 36 years old in 2025.

What condition is Leffingwell ST over Hunting 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 August 2023.

How much traffic does Leffingwell ST over Hunting Bayou carry?

About 500 vehicles per day (2011 count).

How long is Leffingwell ST over Hunting Bayou?

The structure is 82 ft (25 m) long with a longest span of 42 ft (12.8 m) and a deck 40 ft wide.

Who owns Leffingwell ST over Hunting Bayou?

It is owned by the City or Municipal Highway Agency.