Structure 121020050801176 · Harris County, TX

IH 10 EB over Gellhorn DR

Carries IH 10 EB over Gellhorn DR, 0.5 Mi W Of IH 610.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT170 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

170 ft end to end, longest span 47 ft: about 2 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.

Built1966rebuilt 1990
Length169.9 ft51.8 m
Daily traffic75,974counted 2019
Last inspectedNovember 2024every 24 months

Location

StateTexas
CountyHarris
Location0.5 Mi W Of IH 610
CarriesIH 10 EB
CrossesGellhorn DR
Coordinates29.77680, -95.27208

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length169.9 ft (51.8 m)
Max Span46.9 ft (14.3 m)
Deck Width97.4 ft (29.7 m)
Deck Area1538.5 sq m
Main Spans4
Year Built1966 (reconstructed 1990)

Traffic

Avg Daily Traffic75,974 (2019)
Truck Traffic12%
Lanes On Bridge6
Lanes Under Bridge6

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Park/Forest Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number121020050801176

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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