Structure 57 0543L · San Diego County, CA

Interstate 8 WB over In Ko Pah Uc

Carries Interstate 8 WB over In Ko Pah Uc, 11-sd-008-r77.58.

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
CAR · 15 FT102 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

102 ft end to end, longest span 43 ft. 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 tee-beam bridge.

Built196759 years old
Length102.0 ft31.1 m
Daily traffic7,350counted 2014
Last inspectedMay 2023every 24 months

Location

StateCalifornia
CountySan Diego
Location11-sd-008-r77.58
CarriesInterstate 8 WB
CrossesIn Ko Pah Uc
Coordinates32.64279, -116.10728

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length102.0 ft (31.1 m)
Max Span43.0 ft (13.1 m)
Deck Width41.0 ft (12.5 m)
Deck Area388.8 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic7,350 (2014)
Truck Traffic20%
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 Number57 0543L

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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