US Bridges

Capay RD over Moore Creek

Poor

Tehama County, California · 3.6 MI E of RD 99 W · Structure no. 08C0164

Built
1919
106 years old
Condition
Poor
inspected April 2023
Type
Slab
Concrete Continuous
Length
46 ft
3 main spans
Daily traffic
982
2008 count
Owner
County
County Highway Agency

About this bridge

Capay RD over Moore Creek is a concrete continuous slab carrying Capay RD over Moore Creek in Tehama County, California. It was built in 1919, so it is 106 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 982 vehicles a day, roughly 5% of them trucks, projected to reach 981 by 2041. The structure is 46 ft (14 m) long and 20 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

CarriesCapay RD
CrossesMoore Creek
Location3.6 MI E of RD 99 W
RouteCounty Highway 0
Coordinates39.83888, -122.14566
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 alignment8: Equal to present desirable criteria
Operating rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length46 ft (14 m)
Longest span17 ft (5.2 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic982 (2008)
Projected traffic981 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$336,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Capay RD over Moore Creek built?

It was built in 1919, making it 106 years old in 2025.

What condition is Capay RD over Moore Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does Capay RD over Moore Creek carry?

About 982 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is Capay RD over Moore Creek?

The structure is 46 ft (14 m) long with a longest span of 17 ft (5.2 m) and a deck 20 ft wide.

Who owns Capay RD over Moore Creek?

It is owned by the County Highway Agency.