Structure 55 0902S · Orange County, CA

N5-brkhurst Off-ra over Interstate 5 Ramp

Carries N5-brkhurst Off-ra over Interstate 5 Ramp, 12-ora-005-40.55-ana.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT491 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

491 ft end to end, longest span 262 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.

Built200224 years old
Length491.5 ft149.8 m
Daily traffic14,373counted 2014
Last inspectedFebruary 2024every 24 months

Location

StateCalifornia
CountyOrange
Location12-ora-005-40.55-ana
CarriesN5-brkhurst Off-ra
CrossesInterstate 5 Ramp
Coordinates33.84444, -117.95791

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Single/Spread
Total Length491.5 ft (149.8 m)
Max Span262.5 ft (80 m)
Deck Width35.4 ft (10.8 m)
Deck Area1617.8 sq m
Main Spans2
Year Built2002

Traffic

Avg Daily Traffic14,373 (2014)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge10

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number55 0902S

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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