US Bridges

Kitterman Drive over Silverado Canyon Creek

Fair

Orange County, California · 0.1 Mi. S/O Slvrdo Cyn RD · Structure no. 55C0176

Built
1970
55 years old, rebuilt 1983
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
30 ft
1 main span
Daily traffic
200
2021 count
Owner
County
County Highway Agency

About this bridge

Kitterman Drive over Silverado Canyon Creek is a wood or timber stringer/multi-beam or girder carrying Kitterman Drive over Silverado Canyon Creek in Orange County, California. It was built in 1970 and reconstructed in 1983, 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 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 200 vehicles a day, roughly 1% of them trucks, projected to reach 210 by 2041. The structure is 30 ft (9.1 m) long and 14 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKitterman Drive
CrossesSilverado Canyon Creek
Location0.1 Mi. S/O Slvrdo Cyn RD
RouteCounty Highway 0
CountyOrange County
StateCalifornia
Coordinates33.74667, -117.63765
Functional classRural Major Collector

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.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40.3 US tons
Inventory rating27.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width14 ft (4.3 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2021)
Projected traffic210 by 2041
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Kitterman Drive over Silverado Canyon Creek built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1983.

What condition is Kitterman Drive over Silverado Canyon 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 April 2023.

How much traffic does Kitterman Drive over Silverado Canyon Creek carry?

About 200 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Kitterman Drive over Silverado Canyon Creek?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 14 ft wide.

Who owns Kitterman Drive over Silverado Canyon Creek?

It is owned by the County Highway Agency.