US Bridges

Lone Elder RD over Gribble Creek

Fair

Clackamas County, Oregon · 1.0 MI W of HWY 170 · Structure no. 06132 006 00099

Built
1960
65 years old
Condition
Fair
inspected April 2023
Type
Channel Beam
Concrete
Length
23 ft
1 main span
Daily traffic
17,700
2018 count
Owner
County
County Highway Agency

About this bridge

Lone Elder RD over Gribble Creek is a concrete channel beam carrying Lone Elder RD over Gribble Creek in Clackamas County, Oregon. It was built in 1960, so it is 65 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.

It carries about 17,700 vehicles a day, roughly 25% of them trucks, projected to reach 27,900 by 2038. The structure is 23 ft (7 m) long and 28 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLone Elder RD
CrossesGribble Creek
Location1.0 MI W of HWY 170
RouteCounty Highway 0A611
CountyClackamas County
StateOregon
Coordinates45.23053, -122.70028
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadH 20
Structure length23 ft (7 m)
Longest span23 ft (7 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,700 (2018)
Projected traffic27,900 by 2038
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$153,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lone Elder RD over Gribble Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Lone Elder RD over Gribble 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 April 2023.

How much traffic does Lone Elder RD over Gribble Creek carry?

About 17,700 vehicles per day (2018 count), of which roughly 25% are trucks.

How long is Lone Elder RD over Gribble Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 28 ft wide.

Who owns Lone Elder RD over Gribble Creek?

It is owned by the County Highway Agency.