Structure 53 2872 · Los Angeles County, CA

Mountain AVE over Interstate 210

Carries Mountain AVE over Interstate 210, 07-la-210-r49.96-cla.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT241 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

241 ft end to end, longest span 122 ft: about 3 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.

Built200125 years old
Length241.5 ft73.6 m
Daily traffic2,000counted 2015
Last inspectedJanuary 2025every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-210-r49.96-cla
CarriesMountain AVE
CrossesInterstate 210
Coordinates34.12058, -117.72908

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length241.5 ft (73.6 m)
Max Span122.0 ft (37.2 m)
Deck Width67.6 ft (20.6 m)
Deck Area1516.2 sq m
Main Spans2
Year Built2001

Traffic

Avg Daily Traffic2,000 (2015)
Truck Traffic2%
Lanes On Bridge4
Lanes Under Bridge9

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 2872

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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