Structure E-17-NX · Adams County, CO

Ramp To I 76 Wbnd over Ramp Clear Creek R

Carries Ramp To I 76 Wbnd over Ramp Clear Creek R, NW Of I76 And I25 Int.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT806 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 8/9

806 ft end to end, longest span 200 ft: about 2.2 football fields. 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 box-beam bridge.

Built199234 years old
Length805.8 ft245.6 m
Daily traffic37,500counted 2020
Last inspectedJune 2023every 24 months

Location

StateColorado
CountyAdams
LocationNW Of I76 And I25 Int
CarriesRamp To I 76 Wbnd
CrossesRamp Clear Creek R
Coordinates39.81953, -104.98379

Physical Characteristics

MaterialSteel Continuous
DesignBox Beam - Single/Spread
Total Length805.8 ft (245.6 m)
Max Span200.1 ft (61 m)
Deck Width32.2 ft (9.8 m)
Deck Area2406.9 sq m
Main Spans5
Year Built1992

Traffic

Avg Daily Traffic37,500 (2020)
Truck Traffic13%
Lanes On Bridge1
Lanes Under Bridge3

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberE-17-NX

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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