Structure D-18-BK · Weld County, CO

I 76 Ml Ebnd over County Road 53

Carries I 76 Ml Ebnd over County Road 53, 4.9 Mi NE Of Jct SH 52.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

94 ft end to end, longest span 30 ft. Lengths and the car 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 tee-beam bridge.

Built196165 years old
Length94.2 ft28.7 m
Daily traffic8,000counted 2020
Last inspectedFebruary 2023every 24 months

Location

StateColorado
CountyWeld
Location4.9 Mi NE Of Jct SH 52
CarriesI 76 Ml Ebnd
CrossesCounty Road 53
Coordinates40.11026, -104.56583

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length94.2 ft (28.7 m)
Max Span29.5 ft (9 m)
Deck Width42.0 ft (12.8 m)
Deck Area367.4 sq m
Main Spans3
Year Built1961

Traffic

Avg Daily Traffic8,000 (2020)
Truck Traffic19%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberD-18-BK

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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