US Bridges

Morgan Valley RD over Copsey Creek

Fair

Lake County, California · 1.0 MI E SR 29 & SR 53 · Structure no. 14C0006

Built
1965
60 years old
Condition
Fair
inspected November 2023
Type
Arch - Deck
Steel
Length
55 ft
1 main span
Daily traffic
1,800
2011 count
Owner
County
County Highway Agency

About this bridge

Morgan Valley RD over Copsey Creek is a steel arch - deck carrying Morgan Valley RD over Copsey Creek in Lake County, California. It was built in 1965, so it is 60 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 1,800 vehicles a day, roughly 2% of them trucks, projected to reach 2,047 by 2041. The structure is 55 ft (16.8 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMorgan Valley RD
CrossesCopsey Creek
Location1.0 MI E SR 29 & SR 53
RouteCounty Highway 0
Coordinates38.90794, -122.59476
Functional classUrban 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
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length55 ft (16.8 m)
Longest span55 ft (16.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2011)
Projected traffic2,047 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Morgan Valley RD over Copsey Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Morgan Valley RD over Copsey 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 2023.

How much traffic does Morgan Valley RD over Copsey Creek carry?

About 1,800 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Morgan Valley RD over Copsey Creek?

The structure is 55 ft (16.8 m) long with a longest span of 55 ft (16.8 m).

Who owns Morgan Valley RD over Copsey Creek?

It is owned by the County Highway Agency.