Structure 57 1052 · San Diego County, CA

Nobel Drive over Interstate 805 & Ramps

Carries Nobel Drive over Interstate 805 & Ramps, 11-sd-805-25.40-sd.

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 FT286 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

286 ft end to end, longest span 143 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.

Built200224 years old
Length286.1 ft87.2 m
Daily traffic23,702counted 2022
Last inspectedOctober 2024every 48 months

Location

StateCalifornia
CountySan Diego
Location11-sd-805-25.40-sd
CarriesNobel Drive
CrossesInterstate 805 & Ramps
Coordinates32.86976, -117.19479

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length286.1 ft (87.2 m)
Max Span143.4 ft (43.7 m)
Deck Width116.1 ft (35.4 m)
Deck Area3086.9 sq m
Main Spans2
Year Built2002

Traffic

Avg Daily Traffic23,702 (2022)
Truck Traffic1%
Lanes On Bridge7
Lanes Under Bridge9

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number57 1052

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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