Structure 53C1221 · Los Angeles County, CA

La Tuna Canyon RD over Hansen Heights Channel

Carries La Tuna Canyon RD over Hansen Heights Channel, 0.i Mi E Of Sunland BLVD.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
25 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

25 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 slab bridge.

Built196660 years old
Length24.9 ft7.6 m
Daily traffic9,910counted 2018
Last inspectedMarch 2022every 48 months

Location

StateCalifornia
CountyLos Angeles
Location0.i Mi E Of Sunland BLVD
CarriesLa Tuna Canyon RD
CrossesHansen Heights Channel
Coordinates34.23400, -118.36401

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length24.9 ft (7.6 m)
Max Span23.0 ft (7 m)
Deck Width86.0 ft (26.2 m)
Deck Area199.1 sq m
Main Spans1
Year Built1966

Traffic

Avg Daily Traffic9,910 (2018)
Truck Traffic1%
Lanes On Bridge3

Inspection & Ownership

Last InspectionMarch 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number53C1221

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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