Structure F-17-IV · Arapahoe County, CO

I 25 Ml over Dry Creek RD

Carries I 25 Ml over Dry Creek RD, 1.7 Mi N. Of Jct SH 470.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT249 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

249 ft end to end, longest span 123 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 multi-beam bridge.

Built1987rebuilt 2002
Length249.3 ft76 m
Daily traffic212,000counted 2020
Last inspectedFebruary 2024every 24 months

Location

StateColorado
CountyArapahoe
Location1.7 Mi N. Of Jct SH 470
CarriesI 25 Ml
CrossesDry Creek RD
Coordinates39.58020, -104.87613

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length249.3 ft (76 m)
Max Span123.0 ft (37.5 m)
Deck Width165.4 ft (50.4 m)
Deck Area3830.4 sq m
Main Spans2
Year Built1987 (reconstructed 2002)

Traffic

Avg Daily Traffic212,000 (2020)
Truck Traffic7%
Lanes On Bridge10
Lanes Under Bridge10

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 NumberF-17-IV

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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