US Bridges

Berlin Road over Mcdowell Creek

Fair

Linn County, Oregon · 0172 MI S CR 20B · Structure no. 11955A072800172

Built
1958
67 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
85 ft
3 main spans
Daily traffic
824
2021 count
Owner
County
County Highway Agency

About this bridge

Berlin Road over Mcdowell Creek is a concrete tee beam carrying Berlin Road over Mcdowell Creek in Linn County, Oregon. It was built in 1958, so it is 67 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 824 vehicles a day, roughly 10% of them trucks, projected to reach 1,082 by 2041. The structure is 85 ft (25.9 m) long and 29 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesBerlin Road
CrossesMcdowell Creek
Location0172 MI S CR 20B
RouteCounty Highway A0483
StateOregon
Coordinates44.47086, -122.74399
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating40 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span28 ft (8.5 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic824 (2021)
Projected traffic1,082 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 Berlin Road over Mcdowell Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Berlin Road over Mcdowell 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 June 2024.

How much traffic does Berlin Road over Mcdowell Creek carry?

About 824 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Berlin Road over Mcdowell Creek?

The structure is 85 ft (25.9 m) long with a longest span of 28 ft (8.5 m) and a deck 29 ft wide.

Who owns Berlin Road over Mcdowell Creek?

It is owned by the County Highway Agency.