Structure F-16-NX · Denver County, CO

Auraria PKWY Ramp over I25 Ramps And Walnut

Carries Auraria PKWY Ramp over I25 Ramps And Walnut, Ramp Over I25 To SB I25.

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 FT587 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

587 ft end to end, longest span 205 ft: about 1.6 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 multi-beam bridge.

Built198739 years old
Length586.9 ft178.9 m
Daily traffic15,048counted 2024
Last inspectedMay 2024every 24 months

Location

StateColorado
CountyDenver
LocationRamp Over I25 To SB I25
CarriesAuraria PKWY Ramp
CrossesI25 Ramps And Walnut
Coordinates39.74100, -105.01477

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length586.9 ft (178.9 m)
Max Span205.1 ft (62.5 m)
Deck Width38.1 ft (11.6 m)
Deck Area2075.2 sq m
Main Spans4
Year Built1987

Traffic

Avg Daily Traffic15,048 (2024)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge12

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberF-16-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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