US Bridges

Township Road over Klamath Straits Drainage

Good

Klamath County, Oregon · 041 MI E of HWY 97 · Structure no. 21426 060700410

Built
2010
15 years old
Condition
Good
inspected February 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
321
2020 count
Owner
County
County Highway Agency

About this bridge

Township Road over Klamath Straits Drainage is a prestressed concrete box beam or girders - multiple carrying Township Road over Klamath Straits Drainage in Klamath County, Oregon. It was built in 2010, so it is 15 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 321 vehicles a day, roughly 10% of them trucks, projected to reach 371 by 2025. The structure is 98 ft (29.9 m) long and 32 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesTownship Road
CrossesKlamath Straits Drainage
Location041 MI E of HWY 97
RouteCounty Highway C0607
StateOregon
Coordinates42.03886, -121.79597
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.8 US tons
Inventory rating55.3 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadOther
Structure length98 ft (29.9 m)
Longest span94 ft (28.8 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic321 (2020)
Projected traffic371 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 Township Road over Klamath Straits Drainage built?

It was built in 2010, making it 15 years old in 2025.

What condition is Township Road over Klamath Straits Drainage in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does Township Road over Klamath Straits Drainage carry?

About 321 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Township Road over Klamath Straits Drainage?

The structure is 98 ft (29.9 m) long with a longest span of 94 ft (28.8 m) and a deck 32 ft wide.

Who owns Township Road over Klamath Straits Drainage?

It is owned by the County Highway Agency.