What type of concrete mix was used in the Fremont Troll's construction?

Detailed answer

The Fremont Troll's construction used a special mix of concrete that was designed to be durable and resistant to the elements. The mix included a combination of cement, aggregate, and water, as well as additives to improve its strength and durability. This guide entry applies to Fremont Troll at beneath Seattle's Aurora Bridge. Category: Architectural Features. Confirm current hours and policies on the official visitor guide at seattlefremonttroll.com. Primary references include the operator site, Wikipedia, Tripadvisor, Yelp, and Frommer's travel listings. Visitors typically plan 10-35 minutes at the under-bridge public artwork.