Structure 22 0166L · Yolo County, CA

Interstate 505 SB over County Road 12

Carries Interstate 505 SB over County Road 12, 03-yol-505-20.11.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT97 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

97 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.

Built197749 years old
Length96.8 ft29.5 m
Daily traffic7,000counted 2010
Last inspectedMay 2023every 24 months

Location

StateCalifornia
CountyYolo
Location03-yol-505-20.11
CarriesInterstate 505 SB
CrossesCounty Road 12
Coordinates38.81541, -121.93909

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length96.8 ft (29.5 m)
Max Span95.1 ft (29 m)
Deck Width42.0 ft (12.8 m)
Deck Area377.6 sq m
Main Spans1
Year Built1977

Traffic

Avg Daily Traffic7,000 (2010)
Truck Traffic27%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number22 0166L

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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