Comment by monster_truck
3 days ago
The width of a bike lane and its margins is not nearly enough space to safely trench deep enough with the equipment they already have to reach most things they need to tear roads up for. Even modest water mains can be 4ft in diameter, drainage and sewage twice that (in flood prone areas)
4 ft is great for a one way bike lane.
Or, even partially under the bike lane with the balance under the parallel road --- that way, only part of the road needs to be dug up.
Okay then, such utilities as would comfortably fit then.