Structure 53 0952 · Los Angeles County, CA

149th ST over Interstate 110

Carries 149th ST over Interstate 110, 07-la-110-11.52-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 FT228 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

228 ft end to end, longest span 114 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.

Built199531 years old
Length227.7 ft69.4 m
Daily traffic2,770counted 2022
Last inspectedApril 2024every 24 months

Location

StateCalifornia
CountyLos Angeles
Location07-la-110-11.52-la
Carries149th ST
CrossesInterstate 110
Coordinates33.89634, -118.28660

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length227.7 ft (69.4 m)
Max Span114.2 ft (34.8 m)
Deck Width65.9 ft (20.1 m)
Deck Area1394.9 sq m
Main Spans2
Year Built1995

Traffic

Avg Daily Traffic2,770 (2022)
Truck Traffic1%
Lanes On Bridge2
Lanes Under Bridge13

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number53 0952

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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