| Business | Phone |
| Environmental Soil Stblztn 10833 Bainbridge Dr, Little Rock 72212 | (501) 954-8584 |
| Resident Engineer's Office 411 Shamburger Ln, Little Rock 72206 | (501) 490-1545 |
| Resident Engineer's Office 6409 Bluebird Dr, Little Rock 72205 | (501) 663-8395 |