The western stubs of the original tunnels, ringed with cast iron, were converted into roadways.
Some dragged and threw various debris into roadways in an apparent attempt to slow down their police pursuers.
(There is another peak season for deer accidents, in May, when pregnant does drive away their yearlings, which then wander into roadways).
The problems included cracks in the steel "stringers" that support the George Washington Bridge, deteriorating concrete, and unstable light poles that could fall into roadways, said Steven Coleman, a spokesman.
For the most part, the mood of the two-hour march, which wound through Greenwich Village as far north as 14th Street, was calm, but there were a few moments of conflict, as police officers arrested people who they said had stepped off sidewalks at various spots and gone into roadways.
For rocks with fully developed fractures or pores, the grouting time should be controlled not too long to prevent the slurry leaking into roadways, while the grouting pressure and quantity should also be controlled.
Sometimes animals that have their heads stuck in the cups will run blindly into roadways, which also poses a danger to drivers who swerve to avoid them.
The mix of high winds and a heavy downpour could result in power outages and send debris into roadways, while the surf could top 12 feet on west-facing beaches.
The dismissal was by then publicly known, and an angry crowd of ALP supporters had gathered, filling the steps and spilling over both into the roadway and into Parliament House itself.
Those events turned what Mrs. Dunlop recalls as a downtown whose sidewalks were so crowded you had to step into the roadway to pass, into a ghost town with empty storefronts.
