Structure 121020050801249 · Harris County, TX

IH 10 EB over Mccarty St/us 90a

Carries IH 10 EB over Mccarty St/us 90a, 1.25 Mi W Of IH 610.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT285 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

285 ft end to end, longest span 80 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 tee-beam bridge.

Built1958rebuilt 1990
Length285.1 ft86.9 m
Daily traffic75,974counted 2019
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyHarris
Location1.25 Mi W Of IH 610
CarriesIH 10 EB
CrossesMccarty St/us 90a
Coordinates29.77793, -95.28400

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length285.1 ft (86.9 m)
Max Span80.1 ft (24.4 m)
Deck Width73.5 ft (22.4 m)
Deck Area1946.6 sq m
Main Spans3
Year Built1958 (reconstructed 1990)

Traffic

Avg Daily Traffic75,974 (2019)
Truck Traffic12%
Lanes On Bridge4
Lanes Under Bridge8

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Park/Forest Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number121020050801249

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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