Structure 121020002713112 · Harris County, TX

Mcgowen ST over IH 69/sh 288

Carries Mcgowen ST over IH 69/sh 288, 0.35 Mi SW Of IH 45.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT383 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

383 ft end to end, longest span 81 ft: about 5 semi-trucks nose to tail. 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 slab bridge.

Built197551 years old
Length382.9 ft116.7 m
Daily traffic10,199counted 2019
Last inspectedDecember 2024every 24 months

Location

StateTexas
CountyHarris
Location0.35 Mi SW Of IH 45
CarriesMcgowen ST
CrossesIH 69/sh 288
Coordinates29.74039, -95.36583

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignSlab
Total Length382.9 ft (116.7 m)
Max Span81.0 ft (24.7 m)
Deck Width74.1 ft (22.6 m)
Deck Area2637.4 sq m
Main Spans4
Year Built1975

Traffic

Avg Daily Traffic10,199 (2019)
Lanes On Bridge5
Lanes Under Bridge16

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number121020002713112

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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