Inventories (Tables)

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories are stated at the lower of cost (principally first-in, first-out basis) or net realizable value. Inventories as of March 31, 2020 and December 31, 2019 were as follows (in millions):

	March 31,		December 31,
	2020		2019
Asphalt	$	8.1	$	8.0
Processed rock and sand	6.2		6.6
Work in progress	3.1		2.9
Retail merchandise	2.0		2.0
Parts, materials and supplies inventories	1.3		1.2
Total	20.7		$	20.7