US Bridges

Humboldt Road over Soldiers Meadow Creek

Fair

Plumas County, California · 5.0 MI W of SH 89 · Structure no. 09C0072

Built
1970
55 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
40
2019 count
Owner
County
County Highway Agency

About this bridge

Humboldt Road over Soldiers Meadow Creek is a concrete tee beam carrying Humboldt Road over Soldiers Meadow Creek in Plumas County, California. It was built in 1970, so it is 55 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 40 vehicles a day, projected to reach 32 by 2041. The structure is 40 ft (12.2 m) long and 30 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

Open in Google Maps
CarriesHumboldt Road
CrossesSoldiers Meadow Creek
Location5.0 MI W of SH 89
RouteCounty Highway 0
CountyPlumas County
StateCalifornia
Coordinates40.20043, -121.27524
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.1 US tons
Inventory rating55 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span35 ft (10.7 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2019)
Projected traffic32 by 2041
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 Humboldt Road over Soldiers Meadow Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is Humboldt Road over Soldiers Meadow 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 September 2023.

How much traffic does Humboldt Road over Soldiers Meadow Creek carry?

About 40 vehicles per day (2019 count).

How long is Humboldt Road over Soldiers Meadow Creek?

The structure is 40 ft (12.2 m) long with a longest span of 35 ft (10.7 m) and a deck 30 ft wide.

Who owns Humboldt Road over Soldiers Meadow Creek?

It is owned by the County Highway Agency.