US Bridges

US101 (hwy 9) over Jetty Creek

Good

Tillamook County, Oregon · 025 MI N Rockaway · Structure no. 20406 009 Z4752

Built
2008
17 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
80 ft
1 main span
Daily traffic
4,989
2022 count
Owner
State
State Highway Agency

About this bridge

US101 (hwy 9) over Jetty Creek is a prestressed concrete stringer/multi-beam or girder carrying US101 (hwy 9) over Jetty Creek in Tillamook County, Oregon. It was built in 2008, so it is 17 years old, younger 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 4,989 vehicles a day, roughly 12% of them trucks, projected to reach 5,100 by 2042. The structure is 80 ft (24.5 m) long and 42 ft wide. If it were closed, the detour would be 55.9 mi (90 km).

CarriesUS101 (hwy 9)
CrossesJetty Creek
Location025 MI N Rockaway
RouteU.S. Route 101
StateOregon
Coordinates45.6581, -123.9296
Functional classRural Principal Arterial - Other

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating29.3 US tons
Inventory rating22.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length80 ft (24.5 m)
Longest span80 ft (24.5 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,989 (2022)
Projected traffic5,100 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.9 mi (90 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US101 (hwy 9) over Jetty Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is US101 (hwy 9) over Jetty 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 March 2023.

How much traffic does US101 (hwy 9) over Jetty Creek carry?

About 4,989 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is US101 (hwy 9) over Jetty Creek?

The structure is 80 ft (24.5 m) long with a longest span of 80 ft (24.5 m) and a deck 42 ft wide.

Who owns US101 (hwy 9) over Jetty Creek?

It is owned by the State Highway Agency.