US Bridges

Marquardt Ave over Coyote CR

Fair

Los Angeles County, California · 0.2MI S/O 183rd ST · Structure no. 53C1026

Built
1965
60 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
380 ft
4 main spans
Daily traffic
15,963
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Marquardt Ave over Coyote CR is a steel stringer/multi-beam or girder carrying Marquardt Ave over Coyote CR in Los Angeles County, California. It was built in 1965, so it is 60 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 15,963 vehicles a day, roughly 1% of them trucks, projected to reach 17,016 by 2043. The structure is 380 ft (115.8 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMarquardt Ave
CrossesCoyote CR
Location0.2MI S/O 183rd ST
RouteCity Street 0L096
CountyLos Angeles County
StateCalifornia
Coordinates33.86286, -118.03752
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.5 US tons
Inventory rating63.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length380 ft (115.8 m)
Longest span94 ft (28.7 m)
Deck width34 ft (10.3 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,963 (2018)
Projected traffic17,016 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Marquardt Ave over Coyote CR built?

It was built in 1965, making it 60 years old in 2025.

What condition is Marquardt Ave over Coyote CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does Marquardt Ave over Coyote CR carry?

About 15,963 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Marquardt Ave over Coyote CR?

The structure is 380 ft (115.8 m) long with a longest span of 94 ft (28.7 m) and a deck 34 ft wide.

Who owns Marquardt Ave over Coyote CR?

It is owned by the City or Municipal Highway Agency.