US Bridges

Old Olympic HWY over Mcdonald Creek

Good

Clallam County, Washington · 4.0 NE JCT SR101 · Structure no. 088989000000000

Built
2018
7 years old
Condition
Good
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
144 ft
1 main span
Daily traffic
7,837
2017 count
Owner
County
County Highway Agency

About this bridge

Old Olympic HWY over Mcdonald Creek is a prestressed concrete stringer/multi-beam or girder carrying Old Olympic HWY over Mcdonald Creek in Clallam County, Washington. It was built in 2018, so it is 7 years old, younger than the Washington average of 49.8 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 7,837 vehicles a day, roughly 20% of them trucks, projected to reach 14,106 by 2039. The structure is 144 ft (43.9 m) long and 43 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesOld Olympic HWY
CrossesMcdonald Creek
Location4.0 NE JCT SR101
RouteCounty Highway 94120
Coordinates48.10526, -123.22184
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating58.2 US tons
Inventory rating42.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length144 ft (43.9 m)
Longest span140 ft (42.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,837 (2017)
Projected traffic14,106 by 2039
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$5.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Olympic HWY over Mcdonald Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is Old Olympic HWY over Mcdonald 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 December 2022.

How much traffic does Old Olympic HWY over Mcdonald Creek carry?

About 7,837 vehicles per day (2017 count), of which roughly 20% are trucks.

How long is Old Olympic HWY over Mcdonald Creek?

The structure is 144 ft (43.9 m) long with a longest span of 140 ft (42.7 m) and a deck 43 ft wide.

Who owns Old Olympic HWY over Mcdonald Creek?

It is owned by the County Highway Agency.