Structure 19 0173 · Placer County, CA

Twelve Bridges DR over State Route 65

Carries Twelve Bridges DR over State Route 65, 03-pla-065-r11.92-lncn.

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
SEMI-TRUCK · 72 FT265 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

265 ft end to end, longest span 132 ft: about 4 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 box-beam bridge.

Built200026 years old
Length265.1 ft80.8 m
Daily traffic4,000counted 2003
Last inspectedDecember 2023every 24 months

Location

StateCalifornia
CountyPlacer
Location03-pla-065-r11.92-lncn
CarriesTwelve Bridges DR
CrossesState Route 65
Coordinates38.85101, -121.30013

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length265.1 ft (80.8 m)
Max Span131.9 ft (40.2 m)
Deck Width74.8 ft (22.8 m)
Deck Area1842.2 sq m
Main Spans2
Year Built2000

Traffic

Avg Daily Traffic4,000 (2003)
Truck Traffic5%
Lanes On Bridge3
Lanes Under Bridge5

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number19 0173

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.

Nearby Bridges