Structure 180430F00010001 · Collin County, TX

Allen Heights over Cottonwood Creek Trib

Carries Allen Heights over Cottonwood Creek Trib, 0.30 Mi S Of FM 2170.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT75 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 75 ft across with 6 openings. 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, so those are drawn as typical for a culvert.

Built199333 years old
Length75.1 ft22.9 m
Daily traffic1,000counted 2011
Last inspectedJanuary 2023every 24 months

Location

StateTexas
CountyCollin
Location0.30 Mi S Of FM 2170
CarriesAllen Heights
CrossesCottonwood Creek Trib
Coordinates33.09623, -96.64227

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length75.1 ft (22.9 m)
Max Span9.8 ft (3 m)
Deck Area334.3 sq m
Main Spans6
Year Built1993

Traffic

Avg Daily Traffic1,000 (2011)
Truck Traffic10%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number180430F00010001

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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