Structure 53C1660 · Los Angeles County, CA

Mission RD over Up Rr Amtrak Eastlake Av

Carries Mission RD over Up Rr Amtrak Eastlake Av, 0.5 M Ne/o Mission RD.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT183 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

183 ft end to end, longest span 109 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.

Built198046 years old
Length183.1 ft55.8 m
Daily traffic29,000counted 2016
Last inspectedMarch 2023every 24 months

Location

StateCalifornia
CountyLos Angeles
Location0.5 M Ne/o Mission RD
CarriesMission RD
CrossesUp Rr Amtrak Eastlake Av
Coordinates34.06454, -118.20862

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length183.1 ft (55.8 m)
Max Span109.3 ft (33.3 m)
Deck Width100.1 ft (30.5 m)
Deck Area1701.9 sq m
Main Spans2
Year Built1980

Traffic

Avg Daily Traffic29,000 (2016)
Truck Traffic5%
Lanes On Bridge5
Lanes Under Bridge1

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number53C1660

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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