“any idea what this is under the K street bridge between 1st and 2nd Northeast?”

Thanks to Michael for sending from NoMa last night:

Hey @PoPville any idea what this is under the K street bridge between 1st and 2nd Northeast? pic.twitter.com/ZMy30141fH

— Michael Thorning he/him (@ThorningMichael) April 5, 2023

“any idea what this is under the K street bridge between 1st and 2nd Northeast?”