Structure E-17-PB · Denver County, CO

Rmp/i25nb To I70wb over Ramp To I-25 Sbnd R

Carries Rmp/i25nb To I70wb over Ramp To I-25 Sbnd R, In Denver(mousetrap).

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT231 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

231 ft end to end, longest span 165 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 box-beam bridge.

Built199333 years old
Length231.0 ft70.4 m
Daily traffic—reported figure implausible
Last inspectedFebruary 2024every 24 months

Location

StateColorado
CountyDenver
LocationIn Denver(mousetrap)
CarriesRmp/i25nb To I70wb
CrossesRamp To I-25 Sbnd R
Coordinates39.78054, -104.98805

Physical Characteristics

MaterialSteel Continuous
DesignBox Beam - Single/Spread
Total Length231.0 ft (70.4 m)
Max Span165.0 ft (50.3 m)
Deck Width36.1 ft (11 m)
Deck Area774.4 sq m
Main Spans3
Year Built1993

Traffic

Avg Daily Traffic78,500 (2020)
That is about 78,500 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic9%
Lanes On Bridge1
Lanes Under Bridge2

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 NumberE-17-PB

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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