Structure 121020B38913931 · Harris County, TX

Leffingwell ST over Hunting Bayou

Carries Leffingwell ST over Hunting Bayou, 0.1 Mi S Of IH 610.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT82 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

82 ft end to end, longest span 42 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built198937 years old
Length82.0 ft25 m
Daily traffic500counted 2011
Last inspectedAugust 2023every 24 months

Location

StateTexas
CountyHarris
Location0.1 Mi S Of IH 610
CarriesLeffingwell ST
CrossesHunting Bayou
Coordinates29.80657, -95.32978

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length82.0 ft (25 m)
Max Span42.0 ft (12.8 m)
Deck Width40.4 ft (12.3 m)
Deck Area307.5 sq m
Main Spans2
Year Built1989

Traffic

Avg Daily Traffic500 (2011)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number121020B38913931

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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