US Bridges

Cannon Street over Santiago Creek Channel

Poor

Orange County, California · .2 Mi. N/O Santiago C RD · Structure no. 55C0184

Built
1970
55 years old, rebuilt 1998
Condition
Poor
inspected April 2023
Type
Tee Beam
Concrete Continuous
Length
183 ft
3 main spans
Daily traffic
29,100
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cannon Street over Santiago Creek Channel is a concrete continuous tee beam carrying Cannon Street over Santiago Creek Channel in Orange County, California. It was built in 1970 and reconstructed in 1998, so it is 55 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 29,100 vehicles a day, roughly 1% of them trucks, projected to reach 40,751 by 2043. The structure is 183 ft (55.8 m) long and 85 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesCannon Street
CrossesSantiago Creek Channel
Location.2 Mi. N/O Santiago C RD
RouteCity Street 0
Coordinates33.8146, -117.79509
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating19.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length183 ft (55.8 m)
Longest span72 ft (21.9 m)
Deck width85 ft (26 m)
Roadway width73 ft (22.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,100 (2021)
Projected traffic40,751 by 2043
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.4 million (2018 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Cannon Street over Santiago Creek Channel built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1998.

What condition is Cannon Street over Santiago Creek Channel in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does Cannon Street over Santiago Creek Channel carry?

About 29,100 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Cannon Street over Santiago Creek Channel?

The structure is 183 ft (55.8 m) long with a longest span of 72 ft (21.9 m) and a deck 85 ft wide.

Who owns Cannon Street over Santiago Creek Channel?

It is owned by the City or Municipal Highway Agency.