Structure 57 0007L · San Diego County, CA

Interstate 5 over Santa Margarita River

Carries Interstate 5 over Santa Margarita River, 11-sd-005-r56.43l-ocn.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT500 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

500 ft end to end, longest span 200 ft: about 7 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.

Built196759 years old
Length500.0 ft152.4 m
Daily traffic70,250counted 2020
Last inspectedFebruary 2024every 24 months

Location

StateCalifornia
CountySan Diego
Location11-sd-005-r56.43l-ocn
CarriesInterstate 5
CrossesSanta Margarita River
Coordinates33.23491, -117.40605

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length500.0 ft (152.4 m)
Max Span200.1 ft (61 m)
Deck Width67.9 ft (20.7 m)
Deck Area3154.7 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic70,250 (2020)
Truck Traffic6%
Lanes On Bridge4

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number57 0007L

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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