US Bridges

Blue Heron Court over Clear Lake Oaks Channel

Fair

Lake County, California · 0.05 MI NW Island Circle · Structure no. 14C0098

Built
1965
60 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
69 ft
3 main spans
Daily traffic
60
2010 count
Owner
County
County Highway Agency

About this bridge

Blue Heron Court over Clear Lake Oaks Channel is a concrete continuous slab carrying Blue Heron Court over Clear Lake Oaks Channel 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 60 vehicles a day, roughly 3% of them trucks, projected to reach 87 by 2043. The structure is 69 ft (21 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBlue Heron Court
CrossesClear Lake Oaks Channel
Location0.05 MI NW Island Circle
RouteCounty Highway 0
Coordinates39.02391, -122.67172
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length69 ft (21 m)
Longest span22 ft (6.7 m)
Deck width26 ft (8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2010)
Projected traffic87 by 2043
Trucks3%
Lanes on structure2
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

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 Blue Heron Court over Clear Lake Oaks Channel built?

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

What condition is Blue Heron Court over Clear Lake Oaks Channel 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 Blue Heron Court over Clear Lake Oaks Channel carry?

About 60 vehicles per day (2010 count), of which roughly 3% are trucks.

How long is Blue Heron Court over Clear Lake Oaks Channel?

The structure is 69 ft (21 m) long with a longest span of 22 ft (6.7 m) and a deck 26 ft wide.

Who owns Blue Heron Court over Clear Lake Oaks Channel?

It is owned by the County Highway Agency.