Structure 49 0157 · San Luis Obispo County, CA

Santa Barbara RD over US Highway 101

Carries Santa Barbara RD over US Highway 101, 05-slo-101-42.27.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT199 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 8/9Substructure 7/9

199 ft end to end, longest span 64 ft: 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.

Built196264 years old
Length199.1 ft60.7 m
Daily traffic2,000counted 2005
Last inspectedMay 2023every 24 months

Location

StateCalifornia
CountySan Luis Obispo
Location05-slo-101-42.27
CarriesSanta Barbara RD
CrossesUS Highway 101
Coordinates35.44334, -120.63857

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length199.1 ft (60.7 m)
Max Span64.0 ft (19.5 m)
Deck Width40.4 ft (12.3 m)
Deck Area746.6 sq m
Main Spans4
Year Built1962

Traffic

Avg Daily Traffic2,000 (2005)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge4

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 Number49 0157

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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