US Bridges

Blackwillow Wy over Steamboat Crk

Fair

Washoe County, Nevada · Pleasant Valley · Structure no. B2474

Built
1998
27 years old
Condition
Fair
inspected March 2023
Type
Girder and Floorbeam System
Steel
Length
52 ft
1 main span
Daily traffic
61
2017 count
Owner
County
County Highway Agency

About this bridge

Blackwillow Wy over Steamboat Crk is a steel girder and floorbeam system carrying Blackwillow Wy over Steamboat Crk in Washoe County, Nevada. It was built in 1998, so it is 27 years old, younger than the Nevada average of 36.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 61 vehicles a day, projected to reach 151 by 2040. The structure is 52 ft (15.9 m) long and 13 ft wide. If it were closed, the detour would be 77.1 mi (124 km).

CarriesBlackwillow Wy
CrossesSteamboat Crk
LocationPleasant Valley
RouteCounty Highway 0
StateNevada
Coordinates39.34698, -119.77515
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38.5 US tons

Structure

MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20 + Mod
Structure length52 ft (15.9 m)
Longest span52 ft (15.9 m)
Deck width13 ft (3.9 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic61 (2017)
Projected traffic151 by 2040
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Blackwillow Wy over Steamboat Crk built?

It was built in 1998, making it 27 years old in 2025.

What condition is Blackwillow Wy over Steamboat Crk 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 March 2023.

How much traffic does Blackwillow Wy over Steamboat Crk carry?

About 61 vehicles per day (2017 count).

How long is Blackwillow Wy over Steamboat Crk?

The structure is 52 ft (15.9 m) long with a longest span of 52 ft (15.9 m) and a deck 13 ft wide.

Who owns Blackwillow Wy over Steamboat Crk?

It is owned by the County Highway Agency.