US Bridges

Military Crossing over Irrigation Canal

Fair

Klamath County, Oregon · 096 MI E of HWY 97 · Structure no. 35C164067700960

Built
1983
42 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
38
2020 count
Owner
County
County Highway Agency

About this bridge

Military Crossing over Irrigation Canal is a prestressed concrete slab carrying Military Crossing over Irrigation Canal in Klamath County, Oregon. It was built in 1983, so it is 42 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 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 38 vehicles a day, projected to reach 42 by 2025. The structure is 25 ft (7.6 m) long and 32 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

Location

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CarriesMilitary Crossing
CrossesIrrigation Canal
Location096 MI E of HWY 97
RouteCounty Highway C0677
CountyKlamath County
StateOregon
Coordinates42.95039, -121.66644
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to 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 rating50.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span24 ft (7.3 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38 (2020)
Projected traffic42 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 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 Military Crossing over Irrigation Canal built?

It was built in 1983, making it 42 years old in 2025.

What condition is Military Crossing 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 July 2024.

How much traffic does Military Crossing over Irrigation Canal carry?

About 38 vehicles per day (2020 count).

How long is Military Crossing over Irrigation Canal?

The structure is 25 ft (7.6 m) long with a longest span of 24 ft (7.3 m) and a deck 32 ft wide.

Who owns Military Crossing over Irrigation Canal?

It is owned by the County Highway Agency.