Structure B-16-FA · Larimer County, CO

I 25 Ml Nbnd over Flood Drainage

Carries I 25 Ml Nbnd over Flood Drainage, 2 Mi N Of Jct SH 14.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
21 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 21 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built195076 years old
Length21.0 ft6.4 m
Daily traffic19,000counted 2020
Last inspectedMay 2023every 24 months

Location

StateColorado
CountyLarimer
Location2 Mi N Of Jct SH 14
CarriesI 25 Ml Nbnd
CrossesFlood Drainage
Coordinates40.61073, -105.00106

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length21.0 ft (6.4 m)
Max Span9.8 ft (3 m)
Deck Width54.1 ft (16.5 m)
Deck Area105.6 sq m
Main Spans2
Year Built1950

Traffic

Avg Daily Traffic19,000 (2020)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB-16-FA

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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