US Bridges

S405-S73 Connector over Fairview RD-S405 On-Ramp

Fair

Orange County, California · 12-ORA-405-10.35-CMS · Structure no. 55 0435F

Built
1968
57 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
348 ft
4 main spans
Daily traffic
7,800
2014 count
Owner
State
State Highway Agency

About this bridge

S405-S73 Connector over Fairview RD-S405 On-Ramp is a concrete continuous box beam or girders - multiple carrying S405-S73 Connector over Fairview RD-S405 On-Ramp in Orange County, California. It was built in 1968, so it is 57 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 7,800 vehicles a day, roughly 5% of them trucks, projected to reach 9,200 by 2040. The structure is 348 ft (106.1 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS405-S73 Connector
CrossesFairview RD-S405 On-Ramp
Location12-ORA-405-10.35-CMS
RouteInterstate 405
CountyOrange County
StateCalifornia
Coordinates33.68709, -117.89887
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 inspectionAugust 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 typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length348 ft (106.1 m)
Longest span106 ft (32.3 m)
Deck width53 ft (16.2 m)
Roadway width51 ft (15.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,800 (2014)
Projected traffic9,200 by 2040
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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 S405-S73 Connector over Fairview RD-S405 On-Ramp built?

It was built in 1968, making it 57 years old in 2025.

What condition is S405-S73 Connector over Fairview RD-S405 On-Ramp 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 August 2023.

How much traffic does S405-S73 Connector over Fairview RD-S405 On-Ramp carry?

About 7,800 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is S405-S73 Connector over Fairview RD-S405 On-Ramp?

The structure is 348 ft (106.1 m) long with a longest span of 106 ft (32.3 m) and a deck 53 ft wide.

Who owns S405-S73 Connector over Fairview RD-S405 On-Ramp?

It is owned by the State Highway Agency.