Structure 121020017707183 · Harris County, TX

IH 69 over Aldine Mail Route

Carries IH 69 over Aldine Mail Route, 2.78 Mi S Of Bwy 8.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT315 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

315 ft end to end, longest span 121 ft: about 4 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 bridge of this kind.

Built199531 years old
Length315.0 ft96 m
Daily traffic207,404counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyHarris
Location2.78 Mi S Of Bwy 8
CarriesIH 69
CrossesAldine Mail Route
Coordinates29.90264, -95.31159

Physical Characteristics

MaterialPrestressed Concrete
DesignOther
Total Length315.0 ft (96 m)
Max Span121.1 ft (36.9 m)
Deck Width200.8 ft (61.2 m)
Deck Area5875.2 sq m
Main Spans3
Year Built1995

Traffic

Avg Daily Traffic207,404 (2023)
Truck Traffic7%
Lanes On Bridge11
Lanes Under Bridge8

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020017707183

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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