Design and Mechanical Properties of Steel-UHPC Lightweight Composite Decks

Table 6

Comparison between the cost of LWCD and OSD for the Fengxi Bridge (unit: USD).

Items	Unit	Unit price	LWCD				Conventional OSD
			Amount	MC(k)	Replacement times (RT)	WLC (k)	Amount	MC (k)	RT	WLC (k)
Steel	t	2090	1415	2957	0	2957	1617	3378	0	3378
UHPC	m^2	269	6750	1816	0	1816	0	0	0	0
SMA	m^2	12	6750	81	11	972	0	0	0	0
EA	m^2	239	0	0	0	0	6750	1612	11	19343
Total cost	M			4.9		5.8		5.0		22.7
Cost difference	M	MC of LWCD is 140k USD less, and WLC of LWCD is 17 million USD less

Note. MC is the manufacturing cost; WLC is the whole life cost.