US Bridges

Moine Road over Slate Creek

Fair

Shasta County, California · 0.1 MI E Slate Creek RD · Structure no. 06C0062

Built
1927
98 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
183 ft
6 main spans
Daily traffic
52
2013 count
Owner
County
County Highway Agency

About this bridge

Moine Road over Slate Creek is a concrete tee beam carrying Moine Road over Slate Creek in Shasta County, California. It was built in 1927, so it is 98 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 52 vehicles a day, roughly 5% of them trucks, projected to reach 157 by 2042. The structure is 183 ft (55.8 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesMoine Road
CrossesSlate Creek
Location0.1 MI E Slate Creek RD
RouteCounty Highway 0
CountyShasta County
StateCalifornia
Coordinates40.97483, -122.43331
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
Deck7 GoodSome minor problems.
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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating28.2 US tons
Inventory rating19.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length183 ft (55.8 m)
Longest span56 ft (17.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic52 (2013)
Projected traffic157 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Moine Road over Slate Creek built?

It was built in 1927, making it 98 years old in 2025.

What condition is Moine Road over Slate 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 2023.

How much traffic does Moine Road over Slate Creek carry?

About 52 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is Moine Road over Slate Creek?

The structure is 183 ft (55.8 m) long with a longest span of 56 ft (17.1 m) and a deck 27 ft wide.

Who owns Moine Road over Slate Creek?

It is owned by the County Highway Agency.