Structure LASALLE-002 · Weld County, CO

Railroad Drive over Union Ditch

Carries Railroad Drive over Union Ditch, 500 Ft S Of W Taylor AVE.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

30 ft end to end, longest span 13 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 slab bridge.

Built193096 years old
Length29.9 ft9.1 m
Daily traffic202counted 2023
Last inspectedMarch 2024every 24 months

Location

StateColorado
CountyWeld
Location500 Ft S Of W Taylor AVE
CarriesRailroad Drive
CrossesUnion Ditch
Coordinates40.34441, -104.70606

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length29.9 ft (9.1 m)
Max Span13.1 ft (4 m)
Deck Width22.3 ft (6.8 m)
Deck Area61.9 sq m
Main Spans2
Year Built1930

Traffic

Avg Daily Traffic202 (2023)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberLASALLE-002

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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