US Bridges

N73-FAIRVIEW Off over Interstate 405 & Offramp

Fair

Orange County, California · 12-ORA-073-R27.64 · Structure no. 55 1024S

Built
2003
22 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
633 ft
5 main spans
Daily traffic
10,428
2020 count
Owner
State
State Highway Agency

About this bridge

N73-FAIRVIEW Off over Interstate 405 & Offramp is a prestressed concrete continuous box beam or girders - multiple carrying N73-FAIRVIEW Off over Interstate 405 & Offramp in Orange County, California. It was built in 2003, so it is 22 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 6 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 10,428 vehicles a day, roughly 3% of them trucks, projected to reach 14,000 by 2042. The structure is 633 ft (193 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesN73-FAIRVIEW Off
CrossesInterstate 405 & Offramp
Location12-ORA-073-R27.64
RouteState Highway 73
CountyOrange County
StateCalifornia
Coordinates33.68716, -117.89795
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length633 ft (193 m)
Longest span161 ft (49 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,428 (2020)
Projected traffic14,000 by 2042
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was N73-FAIRVIEW Off over Interstate 405 & Offramp built?

It was built in 2003, making it 22 years old in 2025.

What condition is N73-FAIRVIEW Off over Interstate 405 & Offramp 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 April 2024.

How much traffic does N73-FAIRVIEW Off over Interstate 405 & Offramp carry?

About 10,428 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is N73-FAIRVIEW Off over Interstate 405 & Offramp?

The structure is 633 ft (193 m) long with a longest span of 161 ft (49 m) and a deck 38 ft wide.

Who owns N73-FAIRVIEW Off over Interstate 405 & Offramp?

It is owned by the State Highway Agency.