US Bridges

Blaine Road over Moon Creek

Fair

Tillamook County, Oregon · 6.0 MI E of Beaver · Structure no. 11398 858 00680

Built
1960
65 years old, rebuilt 1973
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
23 ft
1 main span
Daily traffic
955
2020 count
Owner
County
County Highway Agency

About this bridge

Blaine Road over Moon Creek is a prestressed concrete slab carrying Blaine Road over Moon Creek in Tillamook County, Oregon. It was built in 1960 and reconstructed in 1973, so it is 65 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 5 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 955 vehicles a day, roughly 15% of them trucks, projected to reach 1,135 by 2025. The structure is 23 ft (7 m) long and 32 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesBlaine Road
CrossesMoon Creek
Location6.0 MI E of Beaver
RouteCounty Highway A0722
StateOregon
Coordinates45.27857, -123.7064
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.8 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic955 (2020)
Projected traffic1,135 by 2025
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 Blaine Road over Moon Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1973.

What condition is Blaine Road over Moon 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 2023.

How much traffic does Blaine Road over Moon Creek carry?

About 955 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Blaine Road over Moon Creek?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 32 ft wide.

Who owns Blaine Road over Moon Creek?

It is owned by the County Highway Agency.