US Bridges

N Fk Nehalem Rvr over Coal Creek

Good

Tillamook County, Oregon · 2.8 MI NE of Nehalem · Structure no. 57C10 504 00270

Built
1968
57 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
71 ft
3 main spans
Daily traffic
679
2020 count
Owner
County
County Highway Agency

About this bridge

N Fk Nehalem Rvr over Coal Creek is a prestressed concrete slab carrying N Fk Nehalem Rvr over Coal Creek in Tillamook 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 679 vehicles a day, roughly 15% of them trucks, projected to reach 809 by 2025. The structure is 71 ft (21.6 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesN Fk Nehalem Rvr
CrossesCoal Creek
Location2.8 MI NE of Nehalem
RouteCounty Highway A0712
StateOregon
Coordinates45.74538, -123.86017
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating51 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length71 ft (21.6 m)
Longest span35 ft (10.7 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic679 (2020)
Projected traffic809 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N Fk Nehalem Rvr over Coal Creek built?

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

What condition is N Fk Nehalem Rvr over Coal 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 June 2023.

How much traffic does N Fk Nehalem Rvr over Coal Creek carry?

About 679 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is N Fk Nehalem Rvr over Coal Creek?

The structure is 71 ft (21.6 m) long with a longest span of 35 ft (10.7 m) and a deck 28 ft wide.

Who owns N Fk Nehalem Rvr over Coal Creek?

It is owned by the County Highway Agency.