US Bridges

RTE 405 Access Oc over RTE 55 Ramp Traffic

Fair

Orange County, California · 50 Ft W/O Macarthur Blvd · Structure no. 55C0654

Built
1990
35 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Multiple
Concrete
Length
41 ft
1 main span
Daily traffic
10,000
2020 count
Owner
Local
Other Local Agency

About this bridge

RTE 405 Access Oc over RTE 55 Ramp Traffic is a concrete box beam or girders - multiple carrying RTE 405 Access Oc over RTE 55 Ramp Traffic in Orange County, California. It was built in 1990, so it is 35 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 10,000 vehicles a day, roughly 1% of them trucks, projected to reach 21,377 by 2041. The structure is 41 ft (12.5 m) long and 30 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesRTE 405 Access Oc
CrossesRTE 55 Ramp Traffic
Location50 Ft W/O Macarthur Blvd
CountyOrange County
StateCalifornia
Coordinates33.68048, -117.85919
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.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length41 ft (12.5 m)
Longest span36 ft (11.1 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2020)
Projected traffic21,377 by 2041
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local 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 RTE 405 Access Oc over RTE 55 Ramp Traffic built?

It was built in 1990, making it 35 years old in 2025.

What condition is RTE 405 Access Oc over RTE 55 Ramp Traffic 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 RTE 405 Access Oc over RTE 55 Ramp Traffic carry?

About 10,000 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is RTE 405 Access Oc over RTE 55 Ramp Traffic?

The structure is 41 ft (12.5 m) long with a longest span of 36 ft (11.1 m) and a deck 30 ft wide.

Who owns RTE 405 Access Oc over RTE 55 Ramp Traffic?

It is owned by the Other Local Agency.