US Bridges

Fourth ST over UPRR

Fair

Los Angeles County, California · 50FT S/O Mission RD · Structure no. 53C1668

Built
1979
46 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Single or Spread
Concrete
Length
60 ft
1 main span
Daily traffic
5,050
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fourth ST over UPRR is a concrete box beam or girders - single or spread carrying Fourth ST 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 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 5,050 vehicles a day, roughly 2% of them trucks, projected to reach 5,808 by 2041. The structure is 60 ft (18.3 m) long and 62 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFourth ST
CrossesUPRR
Location50FT S/O Mission RD
RouteCity Street 0
CountyLos Angeles County
StateCalifornia
Coordinates34.08752, -118.1273
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.9 US tons
Inventory rating64.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span46 ft (14 m)
Deck width62 ft (19 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,050 (2017)
Projected traffic5,808 by 2041
Trucks2%
Lanes on structure2
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 Fourth ST over UPRR built?

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

What condition is Fourth ST over UPRR 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 July 2023.

How much traffic does Fourth ST over UPRR carry?

About 5,050 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Fourth ST over UPRR?

The structure is 60 ft (18.3 m) long with a longest span of 46 ft (14 m) and a deck 62 ft wide.

Who owns Fourth ST over UPRR?

It is owned by the City or Municipal Highway Agency.