Structure 55 0193 · Orange County, CA

Interstate 5 over Red Hill AVE

Carries Interstate 5 over Red Hill AVE, 12-ora-005-r29.10-tus.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT176 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

176 ft end to end, longest span 87 ft: about 2 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.

Built199234 years old
Length175.9 ft53.6 m
Daily traffic324,300counted 2016
Last inspectedJuly 2023every 24 months

Location

StateCalifornia
CountyOrange
Location12-ora-005-r29.10-tus
CarriesInterstate 5
CrossesRed Hill AVE
Coordinates33.73360, -117.81496

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length175.9 ft (53.6 m)
Max Span86.9 ft (26.5 m)
Deck Width201.4 ft (61.4 m)
Deck Area3291.0 sq m
Main Spans2
Year Built1992

Traffic

Avg Daily Traffic324,300 (2016)
Truck Traffic5%
Lanes On Bridge12
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number55 0193

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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