US Bridges

State Route 29 over Cole Creek

Fair

Lake County, California · 01-LAK-029-32.91 · Structure no. 14 0059

Built
1959
66 years old
Condition
Fair
inspected October 2024
Type
Arch - Deck
Steel
Length
26 ft
1 main span
Daily traffic
10,350
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 29 over Cole Creek is a steel arch - deck carrying State Route 29 over Cole Creek in Lake County, California. It was built in 1959, so it is 66 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 10,350 vehicles a day, projected to reach 18,749 by 2046. The structure is 26 ft (8 m) long and 19 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesState Route 29
CrossesCole Creek
Location01-LAK-029-32.91
RouteState Highway 29
CountyLake County
StateCalifornia
Coordinates38.94842, -122.82447
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 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 geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length26 ft (8 m)
Longest span24 ft (7.3 m)
Deck width19 ft (5.7 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,350 (2009)
Projected traffic18,749 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Route 29 over Cole Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is State Route 29 over Cole 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 October 2024.

How much traffic does State Route 29 over Cole Creek carry?

About 10,350 vehicles per day (2009 count).

How long is State Route 29 over Cole Creek?

The structure is 26 ft (8 m) long with a longest span of 24 ft (7.3 m) and a deck 19 ft wide.

Who owns State Route 29 over Cole Creek?

It is owned by the State Highway Agency.