Structure 121020325603380 · Harris County, TX

Bw 8 NB over Armand Bayou

Carries Bw 8 NB over Armand Bayou, 4.7 Mi NE Of IH 45 (s).

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT143 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

143 ft end to end. Lengths and the semi-truck 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 multi-beam bridge.

Built1995rebuilt 2021
Length143.0 ft43.6 m
Daily traffic70,069counted 2023
Last inspectedOctober 2024every 24 months

Location

StateTexas
CountyHarris
Location4.7 Mi NE Of IH 45 (s)
CarriesBw 8 NB
CrossesArmand Bayou
Coordinates29.65504, -95.15606

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length143.0 ft (43.6 m)
Max Span52.2 ft (15.9 m)
Deck Width83.3 ft (25.4 m)
Deck Area1107.4 sq m
Main Spans1
Year Built1995 (reconstructed 2021)

Traffic

Avg Daily Traffic70,069 (2023)
Truck Traffic10%
Lanes On Bridge5

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number121020325603380

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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