Structure F-16-XD · Jefferson County, CO

I70 Ml over Light Rail

Carries I70 Ml over Light Rail, Just N Of 6th Avenue.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT52 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

52 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 slab bridge.

Built201016 years old
Length52.2 ft15.9 m
Daily traffic106,000counted 2020
Last inspectedMarch 2024every 24 months

Location

StateColorado
CountyJefferson
LocationJust N Of 6th Avenue
CarriesI70 Ml
CrossesLight Rail
Coordinates39.72568, -105.17838

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length52.2 ft (15.9 m)
Max Span43.6 ft (13.3 m)
Deck Width201.4 ft (61.4 m)
Deck Area976.3 sq m
Main Spans1
Year Built2010

Traffic

Avg Daily Traffic106,000 (2020)
Truck Traffic7%
Lanes On Bridge6

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure NumberF-16-XD

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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