US Bridges

Six Mile Canyon RD over Six Mile Canyon Crk

PoorPosted for load

Storey County, Nevada · West of Dayton · Structure no. B2476

Built
1997
28 years old
Condition
Poor
inspected October 2024
Type
Girder and Floorbeam System
Steel
Length
50 ft
1 main span
Daily traffic
1,050
2021 count
Owner
County
County Highway Agency

About this bridge

Six Mile Canyon RD over Six Mile Canyon Crk is a steel girder and floorbeam system carrying Six Mile Canyon RD over Six Mile Canyon Crk in Storey County, Nevada. It was built in 1997, so it is 28 years old, younger than the Nevada average of 36.4 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. Its operating status is: posted for load restriction.

It carries about 1,050 vehicles a day, projected to reach 1,900 by 2040. The structure is 50 ft (15.3 m) long and 31 ft wide. If it were closed, the detour would be 77.1 mi (124 km).

CarriesSix Mile Canyon RD
CrossesSix Mile Canyon Crk
LocationWest of Dayton
RouteCounty Highway 0
StateNevada
Coordinates39.30574, -119.56326
Functional classRural Local

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.8 US tons
Inventory rating17.2 US tons

Structure

MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20 + Mod
Structure length50 ft (15.3 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2021)
Projected traffic1,900 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed77.1 mi (124 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 Six Mile Canyon RD over Six Mile Canyon Crk built?

It was built in 1997, making it 28 years old in 2025.

What condition is Six Mile Canyon RD over Six Mile Canyon Crk 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 October 2024.

How much traffic does Six Mile Canyon RD over Six Mile Canyon Crk carry?

About 1,050 vehicles per day (2021 count).

How long is Six Mile Canyon RD over Six Mile Canyon Crk?

The structure is 50 ft (15.3 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns Six Mile Canyon RD over Six Mile Canyon Crk?

It is owned by the County Highway Agency.