US Bridges

Road over Last Creek

Good

Clackamas County, Oregon · S-07 T-7S R-8E Wm · Structure no. 060605000033461

Built
2021
4 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
1 main span
Daily traffic
25
2021 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Last Creek is a steel stringer/multi-beam or girder carrying Road over Last Creek in Clackamas County, Oregon. It was built in 2021, so it is 4 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 25 vehicles a day, projected to reach 37 by 2045. The structure is 90 ft (27.4 m) long and 14 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesRoad
CrossesLast Creek
LocationS-07 T-7S R-8E Wm
RouteFederal Lands Road 42000
StateOregon
Coordinates44.9708, -121.87629
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 inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating46.7 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHL 93
Structure length90 ft (27.4 m)
Longest span89 ft (27.1 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2021)
Projected traffic37 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 Last Creek built?

It was built in 2021, making it 4 years old in 2025.

What condition is Road over Last 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 October 2023.

How much traffic does Road over Last Creek carry?

About 25 vehicles per day (2021 count).

How long is Road over Last Creek?

The structure is 90 ft (27.4 m) long with a longest span of 89 ft (27.1 m) and a deck 14 ft wide.

Who owns Road over Last Creek?

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