US Bridges

Parrish Lake Road over N Santiam

Good

Linn County, Oregon · No Data Entered · Structure no. 061804000012758

Built
2011
14 years old
Condition
Good
inspected May 2021
Type
Slab
Prestressed Concrete
Length
81 ft
1 main span
Daily traffic
75
Owner
Federal
U.S. Forest Service

About this bridge

Parrish Lake Road over N Santiam is a prestressed concrete slab carrying Parrish Lake Road over N Santiam in Linn County, Oregon. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 75 vehicles a day, projected to reach 112 by 2045. The structure is 81 ft (24.6 m) long and 28 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesParrish Lake Road
CrossesN Santiam
LocationNo Data Entered
RouteFederal Lands Road 22660
StateOregon
Coordinates44.52433, -121.99677
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.8 US tons
Inventory rating64.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length81 ft (24.6 m)
Longest span80 ft (24.4 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (—)
Projected traffic112 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Parrish Lake Road over N Santiam built?

It was built in 2011, making it 14 years old in 2025.

What condition is Parrish Lake Road over N Santiam 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 May 2021.

How much traffic does Parrish Lake Road over N Santiam carry?

About 75 vehicles per day (latest count).

How long is Parrish Lake Road over N Santiam?

The structure is 81 ft (24.6 m) long with a longest span of 80 ft (24.4 m) and a deck 28 ft wide.

Who owns Parrish Lake Road over N Santiam?

It is owned by the U.S. Forest Service.