US Bridges

Cot Gr Cemetary RD over Silk Creek

Fair

Lane County, Oregon · 010 MI W US 99 Cot Grove · Structure no. 39C246263500003

Built
1980
45 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
173
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cot Gr Cemetary RD over Silk Creek is a prestressed concrete slab carrying Cot Gr Cemetary RD over Silk Creek in Lane County, Oregon. It was built in 1980, so it is 45 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 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 173 vehicles a day, roughly 3% of them trucks, projected to reach 198 by 2025. The structure is 34 ft (10.4 m) long and 40 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCot Gr Cemetary RD
CrossesSilk Creek
Location010 MI W US 99 Cot Grove
RouteCounty Highway C2635
StateOregon
Coordinates43.79742, -123.07884
Functional classRural Local

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.2 US tons
Inventory rating56.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span33 ft (10.1 m)
Deck width40 ft (12.3 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic173 (2020)
Projected traffic198 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Cot Gr Cemetary RD over Silk Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Cot Gr Cemetary RD over Silk 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 September 2024.

How much traffic does Cot Gr Cemetary RD over Silk Creek carry?

About 173 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Cot Gr Cemetary RD over Silk Creek?

The structure is 34 ft (10.4 m) long with a longest span of 33 ft (10.1 m) and a deck 40 ft wide.

Who owns Cot Gr Cemetary RD over Silk Creek?

It is owned by the City or Municipal Highway Agency.