US Bridges

Smith Rock Road over North Unit Can/Smithrock

Good

Deschutes County, Oregon · 3.44 Mi. East of HWY 97 · Structure no. 24285 C42 00350

Built
2024
1 years old
Condition
Good
inspected August 2024
Type
Slab
Prestressed Concrete
Length
74 ft
1 main span
Daily traffic
362
2020 count
Owner
County
County Highway Agency

About this bridge

Smith Rock Road over North Unit Can/Smithrock is a prestressed concrete slab carrying Smith Rock Road over North Unit Can/Smithrock in Deschutes County, Oregon. It was built in 2024, so it is 1 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 362 vehicles a day, roughly 19% of them trucks, projected to reach 417 by 2025. The structure is 74 ft (22.6 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSmith Rock Road
CrossesNorth Unit Can/Smithrock
Location3.44 Mi. East of HWY 97
RouteCounty Highway 2184
StateOregon
Coordinates44.34887, -121.11504
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating59.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length74 ft (22.6 m)
Longest span73 ft (22.3 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic362 (2020)
Projected traffic417 by 2025
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Smith Rock Road over North Unit Can/Smithrock built?

It was built in 2024, making it 1 years old in 2025.

What condition is Smith Rock Road over North Unit Can/Smithrock 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 2024.

How much traffic does Smith Rock Road over North Unit Can/Smithrock carry?

About 362 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is Smith Rock Road over North Unit Can/Smithrock?

The structure is 74 ft (22.6 m) long with a longest span of 73 ft (22.3 m) and a deck 32 ft wide.

Who owns Smith Rock Road over North Unit Can/Smithrock?

It is owned by the County Highway Agency.