US Bridges

Wardlaw ST over Saint Helena Creek

Fair

Lake County, California · 0.15 MI E SR 29 in Midltn · Structure no. 14C0035

Built
1908
117 years old
Condition
Fair
inspected March 2024
Type
Arch - Deck
Concrete
Length
139 ft
2 main spans
Daily traffic
114
2015 count
Owner
County
County Highway Agency

About this bridge

Wardlaw ST over Saint Helena Creek is a concrete arch - deck carrying Wardlaw ST over Saint Helena Creek in Lake County, California. It was built in 1908, so it is 117 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 114 vehicles a day, roughly 2% of them trucks, projected to reach 188 by 2041. The structure is 139 ft (42.4 m) long and 16 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesWardlaw ST
CrossesSaint Helena Creek
Location0.15 MI E SR 29 in Midltn
RouteCounty Highway 0
Coordinates38.75361, -122.61075
Functional classRural 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
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating28.2 US tons
Inventory rating16.8 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length139 ft (42.4 m)
Longest span65 ft (19.8 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114 (2015)
Projected traffic188 by 2041
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
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 statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Wardlaw ST over Saint Helena Creek built?

It was built in 1908, making it 117 years old in 2025.

What condition is Wardlaw ST over Saint Helena 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 March 2024.

How much traffic does Wardlaw ST over Saint Helena Creek carry?

About 114 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Wardlaw ST over Saint Helena Creek?

The structure is 139 ft (42.4 m) long with a longest span of 65 ft (19.8 m) and a deck 16 ft wide.

Who owns Wardlaw ST over Saint Helena Creek?

It is owned by the County Highway Agency.