US Bridges

Newhalem Ph Road over Newhalem Creek

PoorPosted for load

King County, Washington · Newhalem Powerhouse · Structure no. 087452000000000

Built
1968
57 years old
Condition
Poor
inspected August 2022
Type
Girder and Floorbeam System
Steel
Length
79 ft
1 main span
Daily traffic
65
2022 count
Owner
Local
Other Local Agency

About this bridge

Newhalem Ph Road over Newhalem Creek is a steel girder and floorbeam system carrying Newhalem Ph Road over Newhalem Creek in King County, Washington. It was built in 1968, so it is 57 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 65 vehicles a day, roughly 10% of them trucks, projected to reach 100 by 2042. The structure is 79 ft (24.1 m) long and 15 ft wide.

CarriesNewhalem Ph Road
CrossesNewhalem Creek
LocationNewhalem Powerhouse
Coordinates48.66921, -121.25561
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2022
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20 US tons
Inventory rating12 US tons

Structure

MaterialSteel
DeckOpen grating
Main spans1
Design loadUnknown
Structure length79 ft (24.1 m)
Longest span79 ft (24.1 m)
Deck width15 ft (4.6 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2022)
Projected traffic100 by 2042
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of relocation of road
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Newhalem Ph Road over Newhalem Creek built?

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

What condition is Newhalem Ph Road over Newhalem Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2022.

How much traffic does Newhalem Ph Road over Newhalem Creek carry?

About 65 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Newhalem Ph Road over Newhalem Creek?

The structure is 79 ft (24.1 m) long with a longest span of 79 ft (24.1 m) and a deck 15 ft wide.

Who owns Newhalem Ph Road over Newhalem Creek?

It is owned by the Other Local Agency.