US Bridges

State Route 22 over Santiago Creek

Good

Orange County, California · 12-ORA-022-R11.70-ORA · Structure no. 55 0381

Built
1967
58 years old, rebuilt 2007
Condition
Good
inspected December 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
272 ft
4 main spans
Daily traffic
144,000
2017 count
Owner
State
State Highway Agency

About this bridge

State Route 22 over Santiago Creek is a concrete continuous box beam or girders - multiple carrying State Route 22 over Santiago Creek in Orange County, California. It was built in 1967 and reconstructed in 2007, so it is 58 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 144,000 vehicles a day, roughly 4% of them trucks, projected to reach 160,000 by 2041. The structure is 272 ft (82.9 m) long and 151 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesState Route 22
CrossesSantiago Creek
Location12-ORA-022-R11.70-ORA
RouteState Highway 22
Coordinates33.77634, -117.85563
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating31.7 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length272 ft (82.9 m)
Longest span78 ft (23.8 m)
Deck width151 ft (46 m)
Roadway width146 ft (44.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic144,000 (2017)
Projected traffic160,000 by 2041
Trucks4%
Lanes on structure8
Traffic directionTwo-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 State Route 22 over Santiago Creek built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2007.

What condition is State Route 22 over Santiago Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does State Route 22 over Santiago Creek carry?

About 144,000 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is State Route 22 over Santiago Creek?

The structure is 272 ft (82.9 m) long with a longest span of 78 ft (23.8 m) and a deck 151 ft wide.

Who owns State Route 22 over Santiago Creek?

It is owned by the State Highway Agency.