Structure TNTH13.0-072.0A · Larimer County, CO

County Road 1 over Lake Canal

Carries County Road 1 over Lake Canal, .2 Mi S Of CR 38.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

24 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built200224 years old
Length24.3 ft7.4 m
Daily traffic2,377counted 2023
Last inspectedMarch 2025every 24 months

Location

StateColorado
CountyLarimer
Location.2 Mi S Of CR 38
CarriesCounty Road 1
CrossesLake Canal
Coordinates40.51942, -104.94428

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length24.3 ft (7.4 m)
Max Span21.3 ft (6.5 m)
Deck Width39.7 ft (12.1 m)
Deck Area89.5 sq m
Main Spans1
Year Built2002

Traffic

Avg Daily Traffic2,377 (2023)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2025
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberTNTH13.0-072.0A

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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