Structure 57C0787 · San Diego County, CA

Carroll Canyon RD over Business Access Road

Carries Carroll Canyon RD over Business Access Road, 100ft S/o Int Mira Mesa.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT79 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

79 ft end to end. 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 box-beam bridge.

Built201412 years old
Length79.4 ft24.2 m
Daily traffic12,000counted 2020
Last inspectedMarch 2024every 24 months

Location

StateCalifornia
CountySan Diego
Location100ft S/o Int Mira Mesa
CarriesCarroll Canyon RD
CrossesBusiness Access Road
Coordinates32.88968, -117.20861

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length79.4 ft (24.2 m)
Max Span79.4 ft (24.2 m)
Deck Width95.8 ft (29.2 m)
Deck Area706.6 sq m
Main Spans1
Year Built2014

Traffic

Avg Daily Traffic12,000 (2020)
Truck Traffic5%
Lanes On Bridge6
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number57C0787

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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