US Bridges

Route 133 SB over San Diego Creek

Fair

Orange County, California · 12-ORA-133-8.59-IRVN · Structure no. 55 0290L

Built
1968
57 years old, rebuilt 1999
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
151 ft
5 main spans
Daily traffic
20,000
2019 count
Owner
State
State Highway Agency

About this bridge

Route 133 SB over San Diego Creek is a concrete continuous slab carrying Route 133 SB over San Diego Creek in Orange County, California. It was built in 1968 and reconstructed in 1999, 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 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 20,000 vehicles a day, roughly 5% of them trucks, projected to reach 23,095 by 2042. The structure is 151 ft (46 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesRoute 133 SB
CrossesSan Diego Creek
Location12-ORA-133-8.59-IRVN
RouteState Highway 133
Coordinates33.65454, -117.75973
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: 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 typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length151 ft (46 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,000 (2019)
Projected traffic23,095 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 Route 133 SB over San Diego Creek built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1999.

What condition is Route 133 SB over San Diego Creek 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 November 2024.

How much traffic does Route 133 SB over San Diego Creek carry?

About 20,000 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Route 133 SB over San Diego Creek?

The structure is 151 ft (46 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns Route 133 SB over San Diego Creek?

It is owned by the State Highway Agency.