Structure F-07-AK · Garfield County, CO

I 70 Wbnd over Hillside

Carries I 70 Wbnd over Hillside, 1.4 Miles W Of Grizzly CR.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
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 FT220 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

220 ft end to end, longest span 105 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 segmental box-girder bridge.

Built198640 years old
Length220.1 ft67.1 m
Daily traffic8,500counted 2020
Last inspectedMay 2024every 24 months

Location

StateColorado
CountyGarfield
Location1.4 Miles W Of Grizzly CR
CarriesI 70 Wbnd
CrossesHillside
Coordinates39.56383, -107.27694

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignSegmental Box Girder
Total Length220.1 ft (67.1 m)
Max Span105.0 ft (32 m)
Deck Width37.7 ft (11.5 m)
Deck Area771.6 sq m
Main Spans2
Year Built1986

Traffic

Avg Daily Traffic8,500 (2020)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical9 — Foundation above flood level
Structure NumberF-07-AK

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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