Structure F-17-NC · Denver County, CO

Washington Street over I 25 Ml & Lrt

Carries Washington Street over I 25 Ml & Lrt, In Denver T-rex.

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 FT395 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

395 ft end to end, longest span 146 ft: about 5 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.

Built200323 years old
Length395.0 ft120.4 m
Daily traffic2,857counted 2024
Last inspectedJune 2024every 24 months

Location

StateColorado
CountyDenver
LocationIn Denver T-rex
CarriesWashington Street
CrossesI 25 Ml & Lrt
Coordinates39.69379, -104.97917

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length395.0 ft (120.4 m)
Max Span146.0 ft (44.5 m)
Deck Width57.1 ft (17.4 m)
Deck Area2095.0 sq m
Main Spans3
Year Built2003

Traffic

Avg Daily Traffic2,857 (2024)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge11

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour CriticalNot applicable
Structure NumberF-17-NC

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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