Structure 55C0472 · Orange County, CA

Jamboree Road over Barranca Channel

Carries Jamboree Road over Barranca Channel, 0.2 Mi N Of Main ST.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
25 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 25 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built1975rebuilt 2006
Length24.9 ft7.6 m
Daily traffic61,300counted 2018
Last inspectedAugust 2024every 48 months

Location

StateCalifornia
CountyOrange
Location0.2 Mi N Of Main ST
CarriesJamboree Road
CrossesBarranca Channel
Coordinates33.68220, -117.83803

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length24.9 ft (7.6 m)
Max Span12.1 ft (3.7 m)
Deck Width135.5 ft (41.3 m)
Deck Area313.9 sq m
Main Spans2
Year Built1975 (reconstructed 2006)

Traffic

Avg Daily Traffic61,300 (2018)
Truck Traffic7%
Lanes On Bridge9

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number55C0472

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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