US Bridges

Roundy Road over Little Browns Creek

Good

Trinity County, California · 0.07 MI West of SR 3 · Structure no. 05C0239

Built
2007
18 years old
Condition
Good
inspected August 2021
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
50
2010 count
Owner
County
County Highway Agency

About this bridge

Roundy Road over Little Browns Creek is a concrete slab carrying Roundy Road over Little Browns Creek in Trinity County, California. It was built in 2007, so it is 18 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 50 vehicles a day, projected to reach 54 by 2038. The structure is 32 ft (9.9 m) long and 22 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesRoundy Road
CrossesLittle Browns Creek
Location0.07 MI West of SR 3
RouteCounty Highway 0
Coordinates40.77788, -122.89403
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 inspectionAugust 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length32 ft (9.9 m)
Longest span30 ft (9.1 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2010)
Projected traffic54 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Roundy Road over Little Browns Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Roundy Road over Little Browns 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 August 2021.

How much traffic does Roundy Road over Little Browns Creek carry?

About 50 vehicles per day (2010 count).

How long is Roundy Road over Little Browns Creek?

The structure is 32 ft (9.9 m) long with a longest span of 30 ft (9.1 m) and a deck 22 ft wide.

Who owns Roundy Road over Little Browns Creek?

It is owned by the County Highway Agency.