Structure E-15-AR · Jefferson County, CO

SH 72 Ml over Coal Creek

Carries SH 72 Ml over Coal Creek, 3.4 Mi W Of Jct SH 93.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT43 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 43 ft across. 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.

Built20206 years old
Length42.7 ft13 m
Daily traffic5,100counted 2020
Last inspectedJuly 2023every 24 months

Location

StateColorado
CountyJefferson
Location3.4 Mi W Of Jct SH 93
CarriesSH 72 Ml
CrossesCoal Creek
Coordinates39.88236, -105.29783

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length42.7 ft (13 m)
Max Span20.7 ft (6.3 m)
Deck Width48.9 ft (14.9 m)
Deck Area193.7 sq m
Main Spans1
Year Built2020

Traffic

Avg Daily Traffic5,100 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberE-15-AR

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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