US Bridges

IRR Old SR 33 over Buffalo Slough

Fair

Washoe County, Nevada · West of Gerlach · Structure no. B1684

Built
1999
26 years old
Condition
Fair
inspected April 2023
Type
Girder and Floorbeam System
Steel
Length
62 ft
1 main span
Daily traffic
40
2017 count
Owner
County
County Highway Agency

About this bridge

IRR Old SR 33 over Buffalo Slough is a steel girder and floorbeam system carrying IRR Old SR 33 over Buffalo Slough in Washoe County, Nevada. It was built in 1999, so it is 26 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 40 vehicles a day, projected to reach 99 by 2040. The structure is 62 ft (18.9 m) long and 12 ft wide. If it were closed, the detour would be 77.1 mi (124 km).

Location

Open in Google Maps
CarriesIRR Old SR 33
CrossesBuffalo Slough
LocationWest of Gerlach
RouteCounty Highway 0
CountyWashoe County
StateNevada
Coordinates40.60539, -119.7434
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 alignment7: Better than present minimum criteria
Operating rating46 US tons
Inventory rating27.7 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span62 ft (18.9 m)
Deck width12 ft (3.8 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2017)
Projected traffic99 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 IRR Old SR 33 over Buffalo Slough built?

It was built in 1999, making it 26 years old in 2025.

What condition is IRR Old SR 33 over Buffalo Slough 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 April 2023.

How much traffic does IRR Old SR 33 over Buffalo Slough carry?

About 40 vehicles per day (2017 count).

How long is IRR Old SR 33 over Buffalo Slough?

The structure is 62 ft (18.9 m) long with a longest span of 62 ft (18.9 m) and a deck 12 ft wide.

Who owns IRR Old SR 33 over Buffalo Slough?

It is owned by the County Highway Agency.