US Bridges

Bergdorf Road over Drainage Ditch

Fair

Klamath County, Oregon · 0205 MI N of N Poe Vly RD · Structure no. 35C111134600205

Built
1976
49 years old
Condition
Fair
inspected March 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
170
2020 count
Owner
County
County Highway Agency

About this bridge

Bergdorf Road over Drainage Ditch is a prestressed concrete slab carrying Bergdorf Road over Drainage Ditch in Klamath County, Oregon. It was built in 1976, so it is 49 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 170 vehicles a day, roughly 10% of them trucks, projected to reach 186 by 2025. The structure is 25 ft (7.6 m) long and 32 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesBergdorf Road
CrossesDrainage Ditch
Location0205 MI N of N Poe Vly RD
RouteCounty Highway C1346
CountyKlamath County
StateOregon
Coordinates42.19511, -121.45424
Functional classRural Minor 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.
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 inspectionMarch 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 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 rating39.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width32 ft (9.8 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2020)
Projected traffic186 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 Bergdorf Road over Drainage Ditch built?

It was built in 1976, making it 49 years old in 2025.

What condition is Bergdorf Road over Drainage 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 March 2023.

How much traffic does Bergdorf Road over Drainage Ditch carry?

About 170 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Bergdorf Road over Drainage Ditch?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.

Who owns Bergdorf Road over Drainage Ditch?

It is owned by the County Highway Agency.