Structure 57 0797S · San Diego County, CA

43rd-n805 On Ramp over I805 47th&43rd ST Rmps

Carries 43rd-n805 On Ramp over I805 47th&43rd ST Rmps, 11-sd-805-11.34.

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 FT2,149 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

2,149 ft end to end, longest span 180 ft: about 6.0 football fields. 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
Length2149.0 ft655 m
Daily traffic5,500counted 2020
Last inspectedJuly 2024every 24 months

Location

StateCalifornia
CountySan Diego
Location11-sd-805-11.34
Carries43rd-n805 On Ramp
CrossesI805 47th&43rd ST Rmps
Coordinates32.68922, -117.09704

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length2149.0 ft (655 m)
Max Span180.1 ft (54.9 m)
Deck Width38.1 ft (11.6 m)
Deck Area7,598 sq m
Main Spans10
Year Built1975

Traffic

Avg Daily Traffic5,500 (2020)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge26

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number57 0797S

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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