US Bridges

County RD 207A over Roberts Creek

Fair

Douglas County, Oregon · 0.7 MI N Kelleys Korner · Structure no. 19C511207A00002

Built
1978
47 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
1,717
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 207A over Roberts Creek is a prestressed concrete slab carrying County RD 207A over Roberts Creek in Douglas County, Oregon. It was built in 1978, so it is 47 years old, younger 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 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 1,717 vehicles a day, roughly 5% of them trucks, projected to reach 1,942 by 2025. The structure is 63 ft (19.2 m) long and 28 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCounty RD 207A
CrossesRoberts Creek
Location0.7 MI N Kelleys Korner
RouteCounty Highway C207A
CountyDouglas County
StateOregon
Coordinates43.15615, -123.38199
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span62 ft (18.9 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,717 (2020)
Projected traffic1,942 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 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 County RD 207A over Roberts Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is County RD 207A 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 207A over Roberts Creek carry?

About 1,717 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is County RD 207A over Roberts Creek?

The structure is 63 ft (19.2 m) long with a longest span of 62 ft (18.9 m) and a deck 28 ft wide.

Who owns County RD 207A over Roberts Creek?

It is owned by the County Highway Agency.