Traffic Lab is a Seattle Times project that digs into the region’s transportation issues to explore the policies and politics that determine how we get around and how billions of dollars in public money are spent. Bicyclists in tech-friendly Seattle logged more than 3.3 million miles last year, and showed their love for the Westlake protected bike path along Lake Union, according to data from Strava, a fitness and social media app popular among the wheeled set. The data is part of the first commute report from Strava , which the company said it shares with 4,000 city planners and government agencies for a clearer picture of bicycle commuting patterns, and to better support planning of new bikeways and bike sharing programs. Seattle placed above all other U.S. cities in the ranking — with 3,339,306 miles, to be exact. Chicago came next, with 2.5 million miles, followed by Minneapolis-St. Paul, with 1.7 million miles. Unsurprisingly, the U.S.…