Structure AUB-001 · Placer County, CA

Ponderosa Way over N. Fork American River

Carries Ponderosa Way over N. Fork American River, 5.5 Mi. SE Of Weimar.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT225 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

225 ft end to end: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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 multi-beam bridge.

Built20233 years old
Length225.1 ft68.6 m
Daily traffic75counted 2017
Last inspectedNovember 2023every 48 months

Location

StateCalifornia
CountyPlacer
Location5.5 Mi. SE Of Weimar
CarriesPonderosa Way
CrossesN. Fork American River
Coordinates38.99997, -120.93991

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length225.1 ft (68.6 m)
Max Span157.2 ft (47.9 m)
Deck Width17.4 ft (5.3 m)
Deck Area363.6 sq m
Main Spans1
Year Built2023

Traffic

Avg Daily Traffic75 (2017)
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 48 months
OwnerBureau of Reclamation
Historical SignificanceBridge is not eligible for the National Register
Scour Critical9 — Foundation above flood level
Structure NumberAUB-001

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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