US Bridges

Kgal DR over Ditch

Fair

Linn County, Oregon · 0188 MI W ST HWY 20 · Structure no. 12704 066100188

Built
1970
55 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
309
2021 count
Owner
County
County Highway Agency

About this bridge

Kgal DR over Ditch is a prestressed concrete slab carrying Kgal DR over Ditch in Linn County, Oregon. It was built in 1970, so it is 55 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 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 309 vehicles a day, roughly 10% of them trucks, projected to reach 433 by 2041. The structure is 30 ft (9 m) long and 28 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

CarriesKgal DR
CrossesDitch
Location0188 MI W ST HWY 20
RouteCounty Highway C0661
StateOregon
Coordinates44.57227, -122.95279
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length30 ft (9 m)
Longest span28 ft (8.4 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic309 (2021)
Projected traffic433 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 Kgal DR over Ditch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Kgal DR over Ditch 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 June 2023.

How much traffic does Kgal DR over Ditch carry?

About 309 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Kgal DR over Ditch?

The structure is 30 ft (9 m) long with a longest span of 28 ft (8.4 m) and a deck 28 ft wide.

Who owns Kgal DR over Ditch?

It is owned by the County Highway Agency.