Structure 53 2409 · Los Angeles County, CA

Route 105 & Lrt over Up Rr

Carries Route 105 & Lrt over Up Rr, 07-la-105-r7.65-la.

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 FT770 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

770 ft end to end: 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 rigid-frame bridge.

Built198937 years old
Length770.0 ft234.7 m
Daily traffic260,000counted 2022
Last inspectedApril 2024every 48 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-105-r7.65-la
CarriesRoute 105 & Lrt
CrossesUp Rr
Coordinates33.92903, -118.27550

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length770.0 ft (234.7 m)
Max Span33.1 ft (10.1 m)
Deck Width51.5 ft (15.7 m)
Deck Area3684.8 sq m
Main Spans1
Year Built1989

Traffic

Avg Daily Traffic260,000 (2022)
Truck Traffic5%
Lanes On Bridge12

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour CriticalNot applicable
Structure Number53 2409

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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