Structure C-17-HFA · Larimer County, CO

I 25 Ml Sbnd over County Road 16

Carries I 25 Ml Sbnd over County Road 16, 1.1 Mi So Of Jct SH 402.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT116 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

116 ft end to end. 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 multi-beam bridge.

Built20233 years old
Length115.8 ft35.3 m
Daily traffic86,000counted 2018
Last inspectedJune 2023every 24 months

Location

StateColorado
CountyLarimer
Location1.1 Mi So Of Jct SH 402
CarriesI 25 Ml Sbnd
CrossesCounty Road 16
Coordinates40.36010, -104.98390

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length115.8 ft (35.3 m)
Max Span112.5 ft (34.3 m)
Deck Width65.0 ft (19.8 m)
Deck Area698.9 sq m
Main Spans1
Year Built2023

Traffic

Avg Daily Traffic86,000 (2018)
Truck Traffic14%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

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

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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