US Bridges

Forni Road over Weber Creek

Fair

El Dorado County, California · 1.1 MI N/E Missouri Flat · Structure no. 25C0116

Built
1914
111 years old
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete Continuous
Length
117 ft
1 main span
Daily traffic
2,049
2019 count
Owner
County
County Highway Agency

About this bridge

Forni Road over Weber Creek is a concrete continuous arch - deck carrying Forni Road over Weber Creek in El Dorado County, California. It was built in 1914, so it is 111 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 2,049 vehicles a day, roughly 10% of them trucks, projected to reach 7,101 by 2044. The structure is 117 ft (35.7 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesForni Road
CrossesWeber Creek
Location1.1 MI N/E Missouri Flat
RouteCounty Highway 0
CountyEl Dorado County
StateCalifornia
Coordinates38.71371, -120.82807
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadUnknown
Structure length117 ft (35.7 m)
Longest span80 ft (24.4 m)
Deck width24 ft (7.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,049 (2019)
Projected traffic7,101 by 2044
Trucks10%
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 statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Forni Road over Weber Creek built?

It was built in 1914, making it 111 years old in 2025.

What condition is Forni Road over Weber 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 July 2024.

How much traffic does Forni Road over Weber Creek carry?

About 2,049 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Forni Road over Weber Creek?

The structure is 117 ft (35.7 m) long with a longest span of 80 ft (24.4 m) and a deck 24 ft wide.

Who owns Forni Road over Weber Creek?

It is owned by the County Highway Agency.