Structure 121020B05073003 · Harris County, TX

Bagby ST over S Bank Of Buffalo Bayou

Carries Bagby ST over S Bank Of Buffalo Bayou, At Memorial/buffalo Byu.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT49 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

49 ft end to end, longest span 25 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 slab bridge.

Built195967 years old
Length48.9 ft14.9 m
Daily traffic1,096counted 2021
Last inspectedDecember 2023every 24 months

Location

StateTexas
CountyHarris
LocationAt Memorial/buffalo Byu
CarriesBagby ST
CrossesS Bank Of Buffalo Bayou
Coordinates29.76327, -95.36747

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length48.9 ft (14.9 m)
Max Span24.9 ft (7.6 m)
Deck Width85.3 ft (26 m)
Deck Area387.4 sq m
Main Spans2
Year Built1959

Traffic

Avg Daily Traffic1,096 (2021)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical6 — Scour calculated, stable
Structure Number121020B05073003

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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