US Bridges

Road over Boyer Creek

Good

Clackamas County, Oregon · S-23 T-4S R-5E Wm · Structure no. 060605000001604

Built
1968
57 years old
Condition
Good
inspected July 2024
Type
Frame
Concrete Continuous
Length
70 ft
3 main spans
Daily traffic
50
2006 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Boyer Creek is a concrete continuous frame carrying Road over Boyer Creek in Clackamas County, Oregon. It was built in 1968, so it is 57 years old, older 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 70 ft (21.3 m) long and 17 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesRoad
CrossesBoyer Creek
LocationS-23 T-4S R-5E Wm
RouteFederal Lands Road 46100
CountyClackamas County
StateOregon
Coordinates45.20396, -122.14974
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating40 US tons
Inventory rating27 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length70 ft (21.3 m)
Longest span45 ft (13.7 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2006)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Road over Boyer Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Road over Boyer Creek 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 Road over Boyer Creek carry?

About 50 vehicles per day (2006 count).

How long is Road over Boyer Creek?

The structure is 70 ft (21.3 m) long with a longest span of 45 ft (13.7 m) and a deck 17 ft wide.

Who owns Road over Boyer Creek?

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