US Bridges

Lakeport Blvd over State Route 29

Fair

Lake County, California · 01-LAK-029-R41.42 · Structure no. 14 0068

Built
1972
53 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
190 ft
2 main spans
Daily traffic
1,300
1998 count
Owner
State
State Highway Agency

About this bridge

Lakeport Blvd over State Route 29 is a concrete continuous box beam or girders - multiple carrying Lakeport Blvd over State Route 29 in Lake 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 1,300 vehicles a day, roughly 2% of them trucks, projected to reach 1,970 by 2042. The structure is 190 ft (57.9 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLakeport Blvd
CrossesState Route 29
Location01-LAK-029-R41.42
RouteCounty Highway 0
Coordinates39.03306, -122.92414
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.4 US tons
Inventory rating58.2 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length190 ft (57.9 m)
Longest span98 ft (29.9 m)
Deck width47 ft (14.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (1998)
Projected traffic1,970 by 2042
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Lakeport Blvd over State Route 29 built?

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

What condition is Lakeport Blvd over State Route 29 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 October 2024.

How much traffic does Lakeport Blvd over State Route 29 carry?

About 1,300 vehicles per day (1998 count), of which roughly 2% are trucks.

How long is Lakeport Blvd over State Route 29?

The structure is 190 ft (57.9 m) long with a longest span of 98 ft (29.9 m) and a deck 47 ft wide.

Who owns Lakeport Blvd over State Route 29?

It is owned by the State Highway Agency.