US Bridges

Ferguson Road over Scs Ditch

Good

Lane County, Oregon · 33 MI N Junction City · Structure no. 18607 350889304

Built
1996
29 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
908
2020 count
Owner
County
County Highway Agency

About this bridge

Ferguson Road over Scs Ditch is a prestressed concrete slab carrying Ferguson Road over Scs Ditch in Lane County, Oregon. It was built in 1996, so it is 29 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 908 vehicles a day, roughly 10% of them trucks, projected to reach 1,048 by 2025. The structure is 38 ft (11.6 m) long and 32 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesFerguson Road
CrossesScs Ditch
Location33 MI N Junction City
RouteCounty Highway C3508
StateOregon
Coordinates44.25158, -123.25455
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating50.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span38 ft (11.6 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic908 (2020)
Projected traffic1,048 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Ferguson Road over Scs Ditch built?

It was built in 1996, making it 29 years old in 2025.

What condition is Ferguson Road over Scs Ditch 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 July 2024.

How much traffic does Ferguson Road over Scs Ditch carry?

About 908 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Ferguson Road over Scs Ditch?

The structure is 38 ft (11.6 m) long with a longest span of 38 ft (11.6 m) and a deck 32 ft wide.

Who owns Ferguson Road over Scs Ditch?

It is owned by the County Highway Agency.