US Bridges

US 97 (hwy 004) over Algoma Log Pond

Good

Klamath County, Oregon · 070 MI N HWY 50 Jct. · Structure no. 19927 004 26565

Built
2005
20 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
85 ft
1 main span
Daily traffic
8,120
2022 count
Owner
State
State Highway Agency

About this bridge

US 97 (hwy 004) over Algoma Log Pond is a prestressed concrete slab carrying US 97 (hwy 004) over Algoma Log Pond in Klamath County, Oregon. It was built in 2005, so it is 20 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 8,120 vehicles a day, roughly 18% of them trucks, projected to reach 9,700 by 2042. The structure is 85 ft (25.9 m) long and 64 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

CarriesUS 97 (hwy 004)
CrossesAlgoma Log Pond
Location070 MI N HWY 50 Jct.
RouteU.S. Route 97
StateOregon
Coordinates42.3471, -121.82832
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.8 US tons
Inventory rating59.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length85 ft (25.9 m)
Longest span85 ft (25.9 m)
Deck width64 ft (19.5 m)
Roadway width45 ft (13.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,120 (2022)
Projected traffic9,700 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 97 (hwy 004) over Algoma Log Pond built?

It was built in 2005, making it 20 years old in 2025.

What condition is US 97 (hwy 004) over Algoma Log Pond 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 July 2024.

How much traffic does US 97 (hwy 004) over Algoma Log Pond carry?

About 8,120 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is US 97 (hwy 004) over Algoma Log Pond?

The structure is 85 ft (25.9 m) long with a longest span of 85 ft (25.9 m) and a deck 64 ft wide.

Who owns US 97 (hwy 004) over Algoma Log Pond?

It is owned by the State Highway Agency.