US Bridges

Devoy RD over Freshwater Slough

Good

Humboldt County, California · At Myrtle Ave · Structure no. 04C0213

Built
1986
39 years old
Condition
Good
inspected June 2021
Type
Slab
Concrete Continuous
Length
118 ft
3 main spans
Daily traffic
24
2011 count
Owner
County
County Highway Agency

About this bridge

Devoy RD over Freshwater Slough is a concrete continuous slab carrying Devoy RD over Freshwater Slough in Humboldt County, California. It was built in 1986, so it is 39 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 24 vehicles a day, roughly 5% of them trucks, projected to reach 53 by 2043. The structure is 118 ft (36 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesDevoy RD
CrossesFreshwater Slough
LocationAt Myrtle Ave
RouteCounty Highway 0
Coordinates40.78704, -124.10907
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length118 ft (36 m)
Longest span42 ft (12.8 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24 (2011)
Projected traffic53 by 2043
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 Devoy RD over Freshwater Slough built?

It was built in 1986, making it 39 years old in 2025.

What condition is Devoy RD over Freshwater Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2021.

How much traffic does Devoy RD over Freshwater Slough carry?

About 24 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Devoy RD over Freshwater Slough?

The structure is 118 ft (36 m) long with a longest span of 42 ft (12.8 m) and a deck 28 ft wide.

Who owns Devoy RD over Freshwater Slough?

It is owned by the County Highway Agency.