US Bridges

Matney Road over Irrigation Canal

Fair

Klamath County, Oregon · 004 MI S of Oconnor Road · Structure no. 35C157088900140

Built
1969
56 years old
Condition
Fair
inspected February 2023
Type
Slab
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
96
2020 count
Owner
County
County Highway Agency

About this bridge

Matney Road over Irrigation Canal is a prestressed concrete slab carrying Matney Road over Irrigation Canal in Klamath County, Oregon. It was built in 1969, so it is 56 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 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 96 vehicles a day, projected to reach 105 by 2025. The structure is 37 ft (11.3 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMatney Road
CrossesIrrigation Canal
Location004 MI S of Oconnor Road
RouteCounty Highway C0889
CountyKlamath County
StateOregon
Coordinates42.0843, -121.69834
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.9 US tons
Inventory rating22.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span36 ft (11 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic96 (2020)
Projected traffic105 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Matney Road over Irrigation Canal built?

It was built in 1969, making it 56 years old in 2025.

What condition is Matney Road over Irrigation Canal 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 February 2023.

How much traffic does Matney Road over Irrigation Canal carry?

About 96 vehicles per day (2020 count).

How long is Matney Road over Irrigation Canal?

The structure is 37 ft (11.3 m) long with a longest span of 36 ft (11 m) and a deck 28 ft wide.

Who owns Matney Road over Irrigation Canal?

It is owned by the County Highway Agency.