US Bridges

Road over Lookingglass Creek

Good

Union County, Oregon · Near Palmer Junction · Structure no. 061406000001042

Built
1969
56 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
85 ft
1 main span
Daily traffic
175
1989 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Lookingglass Creek is a concrete stringer/multi-beam or girder carrying Road over Lookingglass Creek in Union County, Oregon. It was built in 1969, so it is 56 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 175 vehicles a day, roughly 10% of them trucks, projected to reach 262 by 2045. The structure is 85 ft (25.9 m) long and 32 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

CarriesRoad
CrossesLookingglass Creek
LocationNear Palmer Junction
RouteFederal Lands Road 63000
StateOregon
Coordinates45.74986, -117.87444
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.
Superstructure7 GoodSome minor problems.
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span55 ft (16.8 m)
Deck width32 ft (9.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (1989)
Projected traffic262 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed15.5 mi (25 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 Lookingglass Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is Road over Lookingglass 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 Lookingglass Creek carry?

About 175 vehicles per day (1989 count), of which roughly 10% are trucks.

How long is Road over Lookingglass Creek?

The structure is 85 ft (25.9 m) long with a longest span of 55 ft (16.8 m) and a deck 32 ft wide.

Who owns Road over Lookingglass Creek?

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