US Bridges

Interstate 405 over UP RR

Fair

Orange County, California · 12-ORA-405-17.21-WTM · Structure no. 55 0269

Built
1965
60 years old, rebuilt 1989
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete Continuous
Length
183 ft
3 main spans
Daily traffic
256,000
2014 count
Owner
State
State Highway Agency

About this bridge

Interstate 405 over UP RR is a concrete continuous tee beam carrying Interstate 405 over UP RR in Orange County, California. It was built in 1965 and reconstructed in 1989, 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 256,000 vehicles a day, roughly 4% of them trucks, projected to reach 343,000 by 2040. The structure is 183 ft (55.8 m) long and 155 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesInterstate 405
CrossesUP RR
Location12-ORA-405-17.21-WTM
RouteInterstate 405
CountyOrange County
StateCalifornia
Coordinates33.73933, -117.99806
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length183 ft (55.8 m)
Longest span70 ft (21.3 m)
Deck width155 ft (47.2 m)
Roadway width148 ft (45.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic256,000 (2014)
Projected traffic343,000 by 2040
Trucks4%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Interstate 405 over UP RR built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1989.

What condition is Interstate 405 over UP RR 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 September 2023.

How much traffic does Interstate 405 over UP RR carry?

About 256,000 vehicles per day (2014 count), of which roughly 4% are trucks.

How long is Interstate 405 over UP RR?

The structure is 183 ft (55.8 m) long with a longest span of 70 ft (21.3 m) and a deck 155 ft wide.

Who owns Interstate 405 over UP RR?

It is owned by the State Highway Agency.