Structure D-17-EA · Weld County, CO

I 25 Ml Sbnd over Weld County Road 20

Carries I 25 Ml Sbnd over Weld County Road 20, 3 Mi N Of SH 52-dacono.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT127 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

127 ft end to end. 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.

Built200620 years old
Length127.0 ft38.7 m
Daily traffic45,500counted 2020
Last inspectedMay 2023every 24 months

Location

StateColorado
CountyWeld
Location3 Mi N Of SH 52-dacono
CarriesI 25 Ml Sbnd
CrossesWeld County Road 20
Coordinates40.13128, -104.98043

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length127.0 ft (38.7 m)
Max Span124.3 ft (37.9 m)
Deck Width66.9 ft (20.4 m)
Deck Area789.5 sq m
Main Spans1
Year Built2006

Traffic

Avg Daily Traffic45,500 (2020)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberD-17-EA

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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