US Bridges

Road over Niagara Creek

Fair

Tillamook County, Oregon · 0.1 MI from JCT RD 8533 · Structure no. 061201000001178

Built
1964
61 years old
Condition
Fair
inspected June 2024
Type
Frame
Concrete Continuous
Length
105 ft
3 main spans
Daily traffic
2
1996 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Niagara Creek is a concrete continuous frame carrying Road over Niagara Creek in Tillamook County, Oregon. It was built in 1964, so it is 61 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2 vehicles a day, projected to reach 3 by 2045. The structure is 105 ft (32 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
CrossesNiagara Creek
Location0.1 MI from JCT RD 8533
RouteFederal Lands Road 85940
CountyTillamook County
StateOregon
Coordinates45.24822, -123.64481
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 alignment8: Equal to present desirable criteria
Operating rating48.1 US tons
Inventory rating31 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length105 ft (32 m)
Longest span75 ft (22.9 m)
Deck width17 ft (5.2 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2 (1996)
Projected traffic3 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 Niagara Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Road over Niagara Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does Road over Niagara Creek carry?

About 2 vehicles per day (1996 count).

How long is Road over Niagara Creek?

The structure is 105 ft (32 m) long with a longest span of 75 ft (22.9 m) and a deck 17 ft wide.

Who owns Road over Niagara Creek?

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