Structure E-16-OO · Denver County, CO

20th Street over I 25 Ml

Carries 20th Street over I 25 Ml, 20th Street Over I25.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT281 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

281 ft end to end, longest span 142 ft: about 4 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 box-beam bridge.

Built199432 years old
Length280.5 ft85.5 m
Daily traffic16,565counted 2024
Last inspectedJune 2024every 24 months

Location

StateColorado
CountyDenver
Location20th Street Over I25
Carries20th Street
CrossesI 25 Ml
Coordinates39.76127, -105.00531

Physical Characteristics

MaterialSteel Continuous
DesignBox Beam - Single/Spread
Total Length280.5 ft (85.5 m)
Max Span141.7 ft (43.2 m)
Deck Width82.3 ft (25.1 m)
Deck Area2146.1 sq m
Main Spans2
Year Built1994

Traffic

Avg Daily Traffic16,565 (2024)
Truck Traffic5%
Lanes On Bridge4
Lanes Under Bridge12

Inspection & Ownership

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

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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