US Bridges

SW Belmont Lane over North Unit Canal

GoodPosted for load

Jefferson County, Oregon · 0.3 MI W of Bear Drive · Structure no. 31C22A608 00000

Built
1995
30 years old
Condition
Good
inspected November 2024
Type
Slab
Prestressed Concrete
Length
59 ft
1 main span
Daily traffic
464
2020 count
Owner
County
County Highway Agency

About this bridge

SW Belmont Lane over North Unit Canal is a prestressed concrete slab carrying SW Belmont Lane over North Unit Canal in Jefferson County, Oregon. It was built in 1995, so it is 30 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. Its operating status is: posted for other load-capacity restriction.

It carries about 464 vehicles a day, roughly 1% of them trucks, projected to reach 514 by 2025. The structure is 59 ft (18 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSW Belmont Lane
CrossesNorth Unit Canal
Location0.3 MI W of Bear Drive
RouteCounty Highway 0
StateOregon
Coordinates44.6216, -121.16709
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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourUnknown foundation; not evaluated for scour
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 alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length59 ft (18 m)
Longest span57 ft (17.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic464 (2020)
Projected traffic514 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 SW Belmont Lane over North Unit Canal built?

It was built in 1995, making it 30 years old in 2025.

What condition is SW Belmont Lane over North Unit Canal 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 November 2024.

How much traffic does SW Belmont Lane over North Unit Canal carry?

About 464 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is SW Belmont Lane over North Unit Canal?

The structure is 59 ft (18 m) long with a longest span of 57 ft (17.4 m) and a deck 28 ft wide.

Who owns SW Belmont Lane over North Unit Canal?

It is owned by the County Highway Agency.