US Bridges

Jamboree Road over State Route 73

Fair

Orange County, California · 12-ORA-073-24.78-NPTB · Structure no. 55 0531

Built
1985
40 years old, rebuilt 2012
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
263 ft
2 main spans
Daily traffic
20,000
2014 count
Owner
State
State Highway Agency

About this bridge

Jamboree Road over State Route 73 is a prestressed concrete continuous box beam or girders - multiple carrying Jamboree Road over State Route 73 in Orange County, California. It was built in 1985 and reconstructed in 2012, so it is 40 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 20,000 vehicles a day, roughly 1% of them trucks, projected to reach 22,000 by 2042. The structure is 263 ft (80.2 m) long and 139 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesJamboree Road
CrossesState Route 73
Location12-ORA-073-24.78-NPTB
RouteCity Street 0M025
CountyOrange County
StateCalifornia
Coordinates33.65506, -117.86506
Functional classUrban Minor Arterial

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.
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 inspectionMay 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 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 spans2
Design loadHS 20 + Mod
Structure length263 ft (80.2 m)
Longest span146 ft (44.5 m)
Deck width139 ft (42.3 m)
Roadway width106 ft (32.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2014)
Projected traffic22,000 by 2042
Trucks1%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Jamboree Road over State Route 73 built?

It was built in 1985, making it 40 years old in 2025. It was reconstructed in 2012.

What condition is Jamboree Road over State Route 73 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 May 2024.

How much traffic does Jamboree Road over State Route 73 carry?

About 20,000 vehicles per day (2014 count), of which roughly 1% are trucks.

How long is Jamboree Road over State Route 73?

The structure is 263 ft (80.2 m) long with a longest span of 146 ft (44.5 m) and a deck 139 ft wide.

Who owns Jamboree Road over State Route 73?

It is owned by the State Highway Agency.