US Bridges

Marengo Ave over UPRR

Poor

Los Angeles County, California · 50FT S/O Mission RD · Structure no. 53C1664

Built
1979
46 years old
Condition
Poor
inspected July 2023
Type
Box Beam or Girders - Single or Spread
Concrete
Length
73 ft
1 main span
Daily traffic
14,009
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Marengo Ave over UPRR is a concrete box beam or girders - single or spread carrying Marengo Ave over UPRR in Los Angeles County, California. It was built in 1979, so it is 46 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 14,009 vehicles a day, roughly 2% of them trucks, projected to reach 15,796 by 2041. The structure is 73 ft (22.1 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMarengo Ave
CrossesUPRR
Location50FT S/O Mission RD
RouteCity Street 0QR33
CountyLos Angeles County
StateCalifornia
Coordinates34.08133, -118.14183
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating42.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length73 ft (22.1 m)
Longest span63 ft (19.2 m)
Deck width62 ft (18.8 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,009 (2017)
Projected traffic15,796 by 2041
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Marengo Ave over UPRR built?

It was built in 1979, making it 46 years old in 2025.

What condition is Marengo Ave over UPRR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does Marengo Ave over UPRR carry?

About 14,009 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Marengo Ave over UPRR?

The structure is 73 ft (22.1 m) long with a longest span of 63 ft (19.2 m) and a deck 62 ft wide.

Who owns Marengo Ave over UPRR?

It is owned by the City or Municipal Highway Agency.