US Bridges

Soda Bay RD over Manning Creek

Fair

Lake County, California · 0.9 MI E/O SR 29 · Structure no. 14C0046

Built
1956
69 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
66 ft
3 main spans
Daily traffic
1,545
2009 count
Owner
County
County Highway Agency

About this bridge

Soda Bay RD over Manning Creek is a concrete continuous slab carrying Soda Bay RD over Manning Creek in Lake County, California. It was built in 1956, so it is 69 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 1,545 vehicles a day, roughly 5% of them trucks, projected to reach 2,342 by 2042. The structure is 66 ft (20.2 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSoda Bay RD
CrossesManning Creek
Location0.9 MI E/O SR 29
RouteCounty Highway 0
CountyLake County
StateCalifornia
Coordinates39.01121, -122.9004
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
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.
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 inspectionFebruary 2024
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 rating66.5 US tons
Inventory rating40 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length66 ft (20.2 m)
Longest span26 ft (7.9 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,545 (2009)
Projected traffic2,342 by 2042
Trucks5%
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Soda Bay RD over Manning Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Soda Bay RD over Manning 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 February 2024.

How much traffic does Soda Bay RD over Manning Creek carry?

About 1,545 vehicles per day (2009 count), of which roughly 5% are trucks.

How long is Soda Bay RD over Manning Creek?

The structure is 66 ft (20.2 m) long with a longest span of 26 ft (7.9 m) and a deck 32 ft wide.

Who owns Soda Bay RD over Manning Creek?

It is owned by the County Highway Agency.