US Bridges

Upper Berlin RD over Hamilton Creek

Poor

Linn County, Oregon · 006 MI E CR 20B Inter · Structure no. 11958 090300060

Built
1971
54 years old
Condition
Poor
inspected June 2024
Type
Slab
Prestressed Concrete
Length
64 ft
2 main spans
Daily traffic
360
2021 count
Owner
County
County Highway Agency

About this bridge

Upper Berlin RD over Hamilton Creek is a prestressed concrete slab carrying Upper Berlin RD over Hamilton Creek in Linn County, Oregon. It was built in 1971, so it is 54 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 360 vehicles a day, roughly 10% of them trucks, projected to reach 494 by 2041. The structure is 64 ft (19.5 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesUpper Berlin RD
CrossesHamilton Creek
Location006 MI E CR 20B Inter
RouteCounty Highway C0903
StateOregon
Coordinates44.50105, -122.72904
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length64 ft (19.5 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2021)
Projected traffic494 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$427,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Upper Berlin RD over Hamilton Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Upper Berlin RD over Hamilton Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Upper Berlin RD over Hamilton Creek carry?

About 360 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Upper Berlin RD over Hamilton Creek?

The structure is 64 ft (19.5 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns Upper Berlin RD over Hamilton Creek?

It is owned by the County Highway Agency.