| S/No | County | Length (Kms) | Cost (KShs) |
|---|---|---|---|
| 1 | Nairobi County | 159.8 | 50,945332644.80 |
| 2 | Machakos County | 83.6 | 6 825 962 253.76 |
| 3 | Kiambu County | 52.2 | 4 373 580, 211.95 |
| 4 | Nakuru County | 44.0 | 3 583 903518.15 |
| 5 | Wajir County | 42.7 | 2,708 354905.97 |
| 6 | Meru County | 28.0 | 2,065,214,574.80 |
| 8 | Mandera County | 23.7 | 1,962,927,547.33 |
| 9 | Kisii County | 29.0 | 1,921,932,854.01 |
| 10 | Mombasa County | 24.7 | 1,871,268,418.80 |
| 11 | West Pokot County | 18.0 | 1,471,481,033.98 |
| 12 | Garissa County | 14.1 | 1,406,396,718.24 |
| 13 | Nyeri County | 39.7 | 1,325,647,206.86 |
| 14 | Lamu County | 15.0 | 1,147,232,220.75 |
| 15 | Uasin Gishu | 15.0 | 1,146,518,437.95 |
| 16 | Marsabit County | 14.0 | 903,171,321.91 |
| 17 | Kirinyaga County | 17.6 | 881,640,233.72 |
| 18 | Isiolo County | 10.0 | 838,571,801.93 |
| 19 | Kisumu County | 14.9 | 687,264,737.21 |
| 20 | Narok County | 7.0 | 680,415,103.62 |
| 21 | Murang'a County | 20.5 | 676,909,871.88 |
| 22 | Bomet County | 10.2 | 642,129,231.99 |
| 23 | Homabay County | 10.0 | 630,973,302.00 |
| 24 | Tana River County | 15.0 | 598,133,811.30 |
| 25 | Laikipia County | 11.2 | 562,127,004.00 |
| 26 | Kajiado County | 7.4 | 558,450,594.60 |
| 27 | Kwale County | 7.0 | 529,440,462.70 |
| 28 | Bungoma County | 22.7 | 477,150,944.94 |
| 29 | Embu County | 7.3 | 254,039,573.70 |
| 30 | Kitui County | 0.3 | 9,887,132.40 |
| 31 | Kakamega County | 9.4 | 34,814,390,000.00 |
| 32 | Tharaka Nithi County | 6.5 | |
| 33 | Vihiga County | 6.0 | |
| 34 | Busia County | 5.0 | |
| Total | 791.4 | 34,814,390,000.00 |