US Bridges

Sleepy Hollow over Silverado Creek

Fair

Orange County, California · 300 Ft S/O Silverado Rd. · Structure no. 55C0741

Built
1972
53 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Sleepy Hollow over Silverado Creek is a concrete slab carrying Sleepy Hollow over Silverado Creek in Orange County, California. It was built in 1972, so it is 53 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 110 by 2040. The structure is 32 ft (9.7 m) long and 20 ft wide. If it were closed, the detour would be 61.5 mi (99 km).

Location

Open in Google Maps
CarriesSleepy Hollow
CrossesSilverado Creek
Location300 Ft S/O Silverado Rd.
RouteCounty Highway 0
CountyOrange County
StateCalifornia
Coordinates33.74692, -117.62144
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.7 m)
Longest span30 ft (9 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic110 by 2040
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed61.5 mi (99 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 Sleepy Hollow over Silverado Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Sleepy Hollow over Silverado 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 September 2023.

How much traffic does Sleepy Hollow over Silverado Creek carry?

About 100 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Sleepy Hollow over Silverado Creek?

The structure is 32 ft (9.7 m) long with a longest span of 30 ft (9 m) and a deck 20 ft wide.

Who owns Sleepy Hollow over Silverado Creek?

It is owned by the County Highway Agency.