18 CONSTRUCTION COST ESTIMATE

18.1 Introduction

This Chapter outlines the method and unit price that were used to derive the cost estimate for the route options. The unit rates used to derive the cost estimate are based on prices obtained in the first quarter of 2001 (Q1/01).

18.2 Cost Estimate Rates

Cost Estimates were prepared for each route option using the headings detailed below. These series numbers correspond to the NRA Manual of Contract Documents for Road Works, with the exception of Series 2600, 2700, 5000 and 6000. These Series have been used as classifications of some items not identified with series numbers in the NRA Manual of Contract Documents for Road Works.

· Series 200 Site Clearance

· Series 300 Fences

· Series 400 Safety Barriers and Pedestrian Guardrails

· Series 500 Drainage and Service Ducts

· Series 600 Earthworks

· Series 900 Road Pavements – Bituminous Bound Materials

· Series 1100 Kerbs, Footways and Paved Areas

· Series 1200 Traffic Signs

· Series 1300 Road Lighting Columns and Brackets

· Series 1400 Electrical Work for Road Lighting and Traffic Signs

· Series 1700 Structural Concrete

· Series 2600 Junctions and Intersections

· Series 2700 Accommodation Works/Statutory Undertaker’s Diversions

· Series 5000 Land Acquisition

· Series 6000 Contingencies

All quantities have been measured from the design, with the exception of Series 1200, 1300, 1400, 2700 and 6000. Series 1200, 1300 and 1400 are calculated as 2%, 1% and 1%, respectively, of the total construction cost excluding land and structures. Series 2700 contains items 2700/01, 2700/02 and 2700/04, Accommodation Works, Statutory Undertaker’s Diversion and Preliminaries respectively. These are calculated as 3%, 5% and 15% respectively, items 2700/01 and 2700/02 based on the total construction cost excluding land and structures, and item 2700/04 being based on the total construction cost excluding land. Series 6000 is calculated at 10% of the total cost.

18.3 Scheme Cost Estimates

The Cost Estimates for each nodal section of the proposed route options are shown below:

		Node		Length (m)	Construction cost	10% contingency & uplift on tender	Land cost	Design & supervision (8% & 5%)	VAT (@ 12.5%)	Total (ex. VAT)
		From	To	Amounts shown are in Thousands of Euro (€ / 1000)
West of Macroom
Green		1	2	1,506	4,138	414	432	592	569	5,575
		2	3	518	1,869	187	130	267	257	2,453
		3	4	6,578	19,943	1,994	2,293	2,852	2,742	27,082
		4	5	5,363	11,372	1,137	1,860	1,626	1,564	15,995
		5	5a	1,582	4,182	418	203	598	575	5,401
		5a	6	1,646	9,671	967	356	1,383	1,330	12,377
	Additional Length for Macroom Bypass	ex. N22	5	N/A	5,101	510	479	729	701	6,819
				17,193	56,275	5,627	5,752	8,047	7,738	75,702
Yellow	Additional Length for N22 tie-in	ex. N22	1	700	1,270	254	76	198	190	1,798
		1	2	589	5,103	510	216	730	702	6,559
		2	3	516	970	97	65	139	133	1,271
		3	3a	3,762	9,975	998	761	1,426	1,372	13,160
		3a	5	8,652	18,891	1,889	1,775	2,701	2,598	25,257
		5	5a	1,582	4,182	418	203	598	575	5,401
		5a	6	1,646	9,671	967	356	1,383	1,330	12,377
				17,447	50,062	5,133	3,451	7,175	6,899	65,822
East of Macroom
Green		6	9	6,047	13,112	1,311	2,635	1,875	1,803	18,933
(WS)		9	14	16,108	71,530	7,153	6,891	10,229	9,835	95,803
		14	16	2,095	6,676	668	1,354	955	918	9,652
	Additional Length for Macroom Bypass	6	7	1,947	8,401	840	356	1,201	1,155	10,798
	Additional Length for Macroom Bypass	7	7a	928	4,511	451	178	645	620	5,785
				27,125	104,230	10,423	11,412	14,905	14,332	140,971
Red		6	7	1,947	8,401	840	356	1,201	1,155	10,798
(WS)		7	7b	954	3,759	376	1,003	537	517	5,675
		7b	13	9,504	47,079	4,708	3,714	6,732	6,473	62,234
		13	14	9,151	26,133	2,613	4,411	3,737	3,593	36,894
		14	16	2,095	6,676	668	1,354	955	918	9,652
	Additional Length for Macroom Bypass	7	7a	928	4,511	451	178	645	620	5,785
				24,579	96,559	9,656	11,015	13,808	13,277	131,037
Yellow		6	7	1,947	8,401	840	356	1,201	1,155	10,798
(DC)		7	7a	928	4,511	451	178	645	620	5,785
		7a	8	5,260	40,875	4,088	1,606	5,845	5,620	52,414
		8	11	5,211	22,667	2,267	1,835	3,241	3,117	30,010
		11	12	9,087	32,227	3,223	2,082	4,608	4,431	42,141
		12	15	4,284	17,151	1,715	2,021	2,453	2,358	23,340
		15	16	333	666	67	61	95	92	888
				27,050	126,498	12,650	8,139	18,089	17,393	165,376
Yellow		6	7	1,947	8,401	840	356	1,201	1,155	10,798
(WS)		7	7a	928	4,511	451	178	645	620	5,785
		7a	8	5,260	37,149	3,715	1,606	5,312	5,108	47,782
		8	11	5,211	18,913	1,891	1,835	2,705	2,600	25,343
		11	12	9,087	26,331	2,633	2,082	3,765	3,621	34,812
		12	15	4,284	14,351	1,435	2,021	2,052	1,973	19,859
		15	16	333	455	45	61	65	63	626
				27,050	110,109	11,011	8,139	15,746	15,140	145,005
Blue		6	7	1,947	8,401	840	356	1,201	1,155	10,798
(DC)		7	7b	954	3,759	376	1,003	537	517	5,675
		7b	10	8,049	52,886	5,289	4,057	7,563	7,272	69,794
		10	11	1,261	7,315	732	381	1,046	1,006	9,474
		11	12a	10,622	43,271	4,327	4,203	6,188	5,950	57,989
		12a	15	2,967	10,574	1,057	965	1,512	1,454	14,108
		15	16	333	666	67	61	95	92	888
	Additional Length for Macroom Bypass	7	7a	928	4,511	451	178	645	620	5,785
				27,061	131,382	13,138	11,203	18,788	18,065	174,510
Blue		6	7	1,947	8,401	840	356	1,201	1,155	10,798
(WS)		7	7b	954	3,759	376	1,003	537	517	5,675
		7b	10	8,049	47,453	4,745	4,057	6,786	6,525	63,041
		10	11	1,261	6,443	644	381	921	886	8,389
		11	12a	10,622	36,352	3,635	4,203	5,198	4,998	49,388
		12a	15	2,967	8,676	868	965	1,241	1,193	11,749
		15	16	437	455	45	61	65	63	626
	Additional Length for Macroom Bypass	7	7a	928	4,511	451	178	645	620	5,785
				27,165	116,048	11,605	11,203	16,595	15,957	155,451

Note: In the above cost estimate summary table, “Additional Length for Macroom Bypass” refers to the following:

West of Macroom: In order to ensure that a viable, working bypass of Macrrom could be constructed as the first phase of the scheme, an additional length of road is required for the Green/Link/Yellow route option between Node 5a and the existing N22 near Carrigaphooca. Further detail of this particular phasing requirement, which was requested by the NRA at a stage after the routes had been developed and investigated with regard to environmental impact, is covered in Chapter 17 of this report. The cost of the “extra” section of road was established on a pro-rata basis of the section of the Yellow route between Nodes 3a and 5.

East of Macroom: As a result of the same requirement to provide the Macroom Bypass as the first phase of the scheme, east of Macroom the Green route has the additional cost of the Macroom Bypass between Nodes 6 and 7a and the Blue and the Red routes between Nodes 7 and 7a.

For this scheme, it has been assumed that preparation (design) and supervision costs are 13.8% and 5% respectively of the total as used in the economic analysis section. The table below shows the cost estimates for routes to the west and east of Macroom:

Total Scheme Costs
			Amounts shown are in Thousands of Euro (€ / 1000)
West		East		Total	West		East		Total
Green/Link1/Yellow	75,702	Green (WS)	140,971	216,673	Yellow	65,822	Green (WS)	140,971	206,793
		Red (WS)	131,037	206,739			Red (WS)	131,037	196,859
		Yellow (DC)	165,376	241,078			Yellow (DC)	165,376	231,198
		Yellow (WS)	145,005	220,707			Yellow (WS)	145,005	210,827
		Blue (DC)	174,510	250,212			Blue (DC)	174,510	240,332
		Blue (WS)	155,451	231,153			Blue (WS)	155,451	221,273

For scheme costs, it can be noted that the cheapest route would be construction of the Yellow Route to the west of Macroom and the Red route to the east. However, it should be noted that the cheapest route may not be the most cost effective in terms that, for the cost, it may not pick up sufficient traffic to be value for money - see Chapter 19: Traffic and Economics.

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