Structure 19 0094 · Placer County, CA

Interstate 80 over Rocklin Road

Carries Interstate 80 over Rocklin Road, 03-pla-080-6.06-roc.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT95 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

95 ft end to end. 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 box-beam bridge.

Built1959rebuilt 1975
Length95.1 ft29 m
Daily traffic92,000counted 2009
Last inspectedOctober 2023every 24 months

Location

StateCalifornia
CountyPlacer
Location03-pla-080-6.06-roc
CarriesInterstate 80
CrossesRocklin Road
Coordinates38.78844, -121.22252

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length95.1 ft (29 m)
Max Span89.9 ft (27.4 m)
Deck Width117.5 ft (35.8 m)
Deck Area1038.2 sq m
Main Spans1
Year Built1959 (reconstructed 1975)

Traffic

Avg Daily Traffic92,000 (2009)
Truck Traffic8%
Lanes On Bridge6
Lanes Under Bridge4

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 0094

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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