Structure 19 0055 · Placer County, CA

State Route 174 over Up Rr Bnsf Ry & Amtrak

Carries State Route 174 over Up Rr Bnsf Ry & Amtrak, 03-pla-174-0.62-cfx.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT504 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

504 ft end to end, longest span 102 ft: about 7 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.

Built193888 years old
Length503.9 ft153.6 m
Daily traffic4,950counted 2009
Last inspectedOctober 2023every 24 months

Location

StateCalifornia
CountyPlacer
Location03-pla-174-0.62-cfx
CarriesState Route 174
CrossesUp Rr Bnsf Ry & Amtrak
Coordinates39.10331, -120.94952

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length503.9 ft (153.6 m)
Max Span102.0 ft (31.1 m)
Deck Width33.1 ft (10.1 m)
Deck Area1551.4 sq m
Main Spans5
Year Built1938

Traffic

Avg Daily Traffic4,950 (2009)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number19 0055

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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