US Bridges

SR 73 NB over Bristol Street

Fair

Orange County, California · 12-ORA-073-R26.78-CMS · Structure no. 55 0541R

Built
1977
48 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
200 ft
2 main spans
Daily traffic
52,500
2014 count
Owner
State
State Highway Agency

About this bridge

SR 73 NB over Bristol Street is a prestressed concrete continuous box beam or girders - multiple carrying SR 73 NB over Bristol Street in Orange County, California. It was built in 1977, so it is 48 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 52,500 vehicles a day, roughly 8% of them trucks, projected to reach 73,000 by 2042. The structure is 200 ft (61 m) long and 100 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR 73 NB
CrossesBristol Street
Location12-ORA-073-R26.78-CMS
RouteState Highway 73
Coordinates33.67587, -117.88803
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.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length200 ft (61 m)
Longest span101 ft (30.8 m)
Deck width100 ft (30.5 m)
Roadway width98 ft (29.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52,500 (2014)
Projected traffic73,000 by 2042
Trucks8%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 73 NB over Bristol Street built?

It was built in 1977, making it 48 years old in 2025.

What condition is SR 73 NB over Bristol Street 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 SR 73 NB over Bristol Street carry?

About 52,500 vehicles per day (2014 count), of which roughly 8% are trucks.

How long is SR 73 NB over Bristol Street?

The structure is 200 ft (61 m) long with a longest span of 101 ft (30.8 m) and a deck 100 ft wide.

Who owns SR 73 NB over Bristol Street?

It is owned by the State Highway Agency.