Structure 53 1085R · Los Angeles County, CA

Interstate 5 NB over Metrolink Up Rr Amtrak

Carries Interstate 5 NB over Metrolink Up Rr Amtrak, 07-la-005-28.70-brb.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT740 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

740 ft end to end, longest span 110 ft: about 2.1 football fields. 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 multi-beam bridge.

Built1959rebuilt 2020
Length740.2 ft225.6 m
Daily traffic119,510counted 2018
Last inspectedDecember 2024every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-005-28.70-brb
CarriesInterstate 5 NB
CrossesMetrolink Up Rr Amtrak
Coordinates34.17340, -118.30621

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length740.2 ft (225.6 m)
Max Span109.6 ft (33.4 m)
Deck Width98.4 ft (30 m)
Deck Area6,768 sq m
Main Spans8
Year Built1959 (reconstructed 2020)

Traffic

Avg Daily Traffic119,510 (2018)
Truck Traffic8%
Lanes On Bridge5
Lanes Under Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 1085R

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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