Developing an Optimization Model to Manage Unpaved Roads

Table 5

Summary of road conditions.

Road #	Segment length (mi)	Overall condition	Condition after 90 days without treatment	Application of maintenance treatments
				Assigned service level (SL)	Treatment type	Cost	Condition after treatment
1	0.98	6	3.12	VH	3	$4,921	8
2	1.99	3	0.12	VH	5	$99,545	9
3	3.06	6	3.12	VH	3	$15,298	8
4	0.95	6	3.12	VH	3	$4,746	8
5	2.25	7	4.12	VH	0	$—	7
6	6.93	6	3.12	VH	3	$34,650	8
7	5.22	3	0.12	H	5	$260,938	9
8	5.21	7	4.12	H	0	$—	7
9	2.00	3	0.12	H	5	$99,981	9
10	3.00	3	0.12	H	5	$149,981	9
11	7.09	6	3.12	H	3	$35,450	8
12	2.02	3	0.12	H	5	$101,070	9
13	0.23	6	3.12	H	4	$3,460	8
14	1.01	6	3.12	H	3	$5,045	8
15	0.71	6	3.12	H	3	$3,564	8
16	1.28	6	3.12	H	3	$6,384	8
17	0.67	3	0.12	H	4	$10,108	8
18	2.01	7	4.12	H	0	$—	7
19	0.96	6	3.12	H	3	$4,800	8
20	0.24	6	3.12	H	3	$1,200	8
Total	46.7					$841,143
Weighted average		5.4	2.4				8.2