US Bridges

Road over Grass Creek

Good

Lincoln County, Oregon · No Data Entered · Structure no. 061203000001156

Built
1965
60 years old
Condition
Good
inspected July 2021
Type
Frame
Concrete Continuous
Length
65 ft
3 main spans
Daily traffic
5
1996 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Grass Creek is a concrete continuous frame carrying Road over Grass Creek in Lincoln County, Oregon. It was built in 1965, so it is 60 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 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 5 vehicles a day, projected to reach 7 by 2045. The structure is 65 ft (19.8 m) long and 17 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesRoad
CrossesGrass Creek
LocationNo Data Entered
RouteFederal Lands Road 34310
StateOregon
Coordinates44.37719, -123.83617
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2021
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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length65 ft (19.8 m)
Longest span43 ft (13.1 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (1996)
Projected traffic7 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 Grass Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Road over Grass 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 2021.

How much traffic does Road over Grass Creek carry?

About 5 vehicles per day (1996 count).

How long is Road over Grass Creek?

The structure is 65 ft (19.8 m) long with a longest span of 43 ft (13.1 m) and a deck 17 ft wide.

Who owns Road over Grass Creek?

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