Structure 57 0775 · San Diego County, CA

Palm Avenue over Interstate 805

Carries Palm Avenue over Interstate 805, 11-sd-805-2.90-sd.

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
SEMI-TRUCK · 72 FT326 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

326 ft end to end, longest span 166 ft: about 5 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.

Built197551 years old
Length326.1 ft99.4 m
Daily traffic28,566counted 2020
Last inspectedMay 2024every 24 months

Location

StateCalifornia
CountySan Diego
Location11-sd-805-2.90-sd
CarriesPalm Avenue
CrossesInterstate 805
Coordinates32.58365, -117.03754

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length326.1 ft (99.4 m)
Max Span166.0 ft (50.6 m)
Deck Width94.2 ft (28.7 m)
Deck Area2852.8 sq m
Main Spans2
Year Built1975

Traffic

Avg Daily Traffic28,566 (2020)
Truck Traffic2%
Lanes On Bridge6
Lanes Under Bridge8

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number57 0775

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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