Structure E-470-1.71A · Douglas County, CO

E-470 EB over Peoria Street

Carries E-470 EB over Peoria Street, 1.71 Mi From I-25.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT204 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

204 ft end to end, longest span 99 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 multi-beam bridge.

Built1990rebuilt 2004
Length203.7 ft62.1 m
Daily traffic25,045counted 2018
Last inspectedAugust 2024every 24 months

Location

StateColorado
CountyDouglas
Location1.71 Mi From I-25
CarriesE-470 EB
CrossesPeoria Street
Coordinates39.55214, -104.83944

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length203.7 ft (62.1 m)
Max Span99.4 ft (30.3 m)
Deck Width73.8 ft (22.5 m)
Deck Area1397.2 sq m
Main Spans2
Year Built1990 (reconstructed 2004)

Traffic

Avg Daily Traffic25,045 (2018)
Truck Traffic6%
Lanes On Bridge3
Lanes Under Bridge6

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberE-470-1.71A

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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