The short answer - "No."
US 101 on the north side and west side is usually far from the coast and deeply forested.
(Lake Crescent is nice - also heading into Olympic N.P. to hike - hiking, not biking is the game.)
Traffic is moderate, some logging trucks - fewer than 25 years ago, shoulders variable.
The sublime scenery is on Hwy 112 out to Neah Bay, but that doesn't take you south.
I do like US 101 on the east side along the Hood Canal.
Pleasant coastal views - nothing spectacular. Moderate traffic and variable shoulders.
Cut west earlier on Cloquallam-Satsop Road to Montesano -
Then Blue Slough Road to South Aberdeen.
I've also done both US 101 and Hwy 105 south of Aberdeen.
Yes, Hwy 105 is much longer, but well worth it.
Westport is charming with a bike trail along the dunes.
And the ride along Willapa Bay is primo - da best.
(Esp. on the much quieter Hwy 105)
Cape Disappointment is way more stunning than Fort Stevens.
I love Skamokawa, the Hanson Refuge Road, and the Cathlamet Ferry -
But they would be well out of your way if you hug the coast.
Pic - Willapa Bay