US Bridges

Port Kenyon Road over Francis Creek

Good

Humboldt County, California · 0.5 MI W of Main Street · Structure no. 04C0262

Built
2015
10 years old
Condition
Good
inspected July 2023
Type
Arch - Deck
Concrete
Length
38 ft
1 main span
Daily traffic
500
2017 count
Owner
County
County Highway Agency

About this bridge

Port Kenyon Road over Francis Creek is a concrete arch - deck carrying Port Kenyon Road over Francis Creek in Humboldt County, California. It was built in 2015, so it is 10 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 714 by 2045. The structure is 38 ft (11.7 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPort Kenyon Road
CrossesFrancis Creek
Location0.5 MI W of Main Street
RouteCounty Highway 0
Coordinates40.59325, -124.25839
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
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length38 ft (11.7 m)
Longest span38 ft (11.6 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2017)
Projected traffic714 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Port Kenyon Road over Francis Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is Port Kenyon Road over Francis Creek 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 July 2023.

How much traffic does Port Kenyon Road over Francis Creek carry?

About 500 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Port Kenyon Road over Francis Creek?

The structure is 38 ft (11.7 m) long with a longest span of 38 ft (11.6 m) and a deck 30 ft wide.

Who owns Port Kenyon Road over Francis Creek?

It is owned by the County Highway Agency.