US Bridges

County RD 110 over Roberts Creek

FairPosted for load

Douglas County, Oregon · 0.5 MI N Kelleys Korner · Structure no. 19C204011000004

Built
1968
57 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
1 main span
Daily traffic
930
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 110 over Roberts Creek is a steel stringer/multi-beam or girder carrying County RD 110 over Roberts Creek in Douglas County, Oregon. It was built in 1968, so it is 57 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 930 vehicles a day, roughly 5% of them trucks, projected to reach 1,050 by 2025. The structure is 90 ft (27.4 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCounty RD 110
CrossesRoberts Creek
Location0.5 MI N Kelleys Korner
RouteCounty Highway C0110
CountyDouglas County
StateOregon
Coordinates43.1533, -123.3811
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.6 US tons
Inventory rating18.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length90 ft (27.4 m)
Longest span49 ft (14.9 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic930 (2020)
Projected traffic1,050 by 2025
Trucks5%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 110 over Roberts Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is County RD 110 over Roberts Creek 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 July 2023.

How much traffic does County RD 110 over Roberts Creek carry?

About 930 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is County RD 110 over Roberts Creek?

The structure is 90 ft (27.4 m) long with a longest span of 49 ft (14.9 m) and a deck 40 ft wide.

Who owns County RD 110 over Roberts Creek?

It is owned by the County Highway Agency.