Structure 56C0620 · Riverside County, CA

Collier Avenue over Wetlands

Carries Collier Avenue over Wetlands, 0.3 Mi SE Nichols/collier.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT76 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 76 ft across. 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, so those are drawn as typical for a culvert.

Built199135 years old
Length76.1 ft23.2 m
Daily traffic2,000counted 2017
Last inspectedApril 2023every 48 months

Location

StateCalifornia
CountyRiverside
Location0.3 Mi SE Nichols/collier
CarriesCollier Avenue
CrossesWetlands
Coordinates33.70334, -117.35668

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length76.1 ft (23.2 m)
Max Span26.9 ft (8.2 m)
Deck Width100.1 ft (30.5 m)
Deck Area707.6 sq m
Main Spans1
Year Built1991

Traffic

Avg Daily Traffic2,000 (2017)
Truck Traffic1%
Lanes On Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number56C0620

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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