Structure H-02-ET · Mesa County, CO

County Road 27 over I 70 Ml

Carries County Road 27 over I 70 Ml, 0.8 Mi W Of Horizon Drive.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT190 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

190 ft end to end, longest span 54 ft: about 3 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.

Built196561 years old
Length190.0 ft57.9 m
Daily traffic3,474counted 2022
Last inspectedFebruary 2024every 24 months

Location

StateColorado
CountyMesa
Location0.8 Mi W Of Horizon Drive
CarriesCounty Road 27
CrossesI 70 Ml
Coordinates39.11544, -108.55227

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length190.0 ft (57.9 m)
Max Span54.1 ft (16.5 m)
Deck Width27.9 ft (8.5 m)
Deck Area492.1 sq m
Main Spans4
Year Built1965

Traffic

Avg Daily Traffic3,474 (2022)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberH-02-ET

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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