US Bridges

Lichau RD over Copeland Creek

Fair

Sonoma County, California · 1.0 MI E Pressley Road · Structure no. 20C0265

Built
1968
57 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
46 ft
1 main span
Daily traffic
1,500
2015 count
Owner
County
County Highway Agency

About this bridge

Lichau RD over Copeland Creek is a concrete slab carrying Lichau RD over Copeland Creek in Sonoma County, California. It was built in 1968, 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 1,500 vehicles a day, roughly 5% of them trucks, projected to reach 3,201 by 2042. The structure is 46 ft (13.9 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLichau RD
CrossesCopeland Creek
Location1.0 MI E Pressley Road
RouteCounty Highway 0
Coordinates38.3326, -122.62944
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length46 ft (13.9 m)
Longest span43 ft (13.1 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2015)
Projected traffic3,201 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Lichau RD over Copeland Creek built?

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

What condition is Lichau RD over Copeland 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 Lichau RD over Copeland Creek carry?

About 1,500 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Lichau RD over Copeland Creek?

The structure is 46 ft (13.9 m) long with a longest span of 43 ft (13.1 m) and a deck 24 ft wide.

Who owns Lichau RD over Copeland Creek?

It is owned by the County Highway Agency.