The River Tame West Viaducts will carry three rail tracks and feature one single-track viaduct and one double-track viaduct. A spokesperson for HS2 said work was underway on the double-track viaduct.

Amanda Massih points to where a chunk of concrete fell and struck her car as she sat at a red light under the Lawrence and Avondale viaduct on Feb. 20. She says the city’s 311 nonemergency ...