Structure 121020AA0816005 · Harris County, TX

Spring Cypress RD over Theiss Gully

Carries Spring Cypress RD over Theiss Gully, 0.4 Mi W Of Stuebner Air.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT67 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

67 ft end to end. Lengths and the car 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 box-beam bridge.

Built199927 years old
Length66.9 ft20.4 m
Daily traffic23,326counted 2016
Last inspectedOctober 2023every 24 months

Location

StateTexas
CountyHarris
Location0.4 Mi W Of Stuebner Air
CarriesSpring Cypress RD
CrossesTheiss Gully
Coordinates30.04247, -95.54489

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length66.9 ft (20.4 m)
Max Span65.0 ft (19.8 m)
Deck Width73.2 ft (22.3 m)
Deck Area454.9 sq m
Main Spans1
Year Built1999

Traffic

Avg Daily Traffic23,326 (2016)
Truck Traffic2%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical6 — Scour calculated, stable
Structure Number121020AA0816005

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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