About H&H
With more than 139 years of experience, H&H is a trusted, full-service infrastructure engineering firm focused on delivering complex, forward-looking solutions that advance our clients’ goals and strengthen the communities they serve. Infrastructure owners, contractors, and partners rely on our proven ability to manage every phase of a project’s life cycle, from early study and planning through design and construction, with the technical excellence, responsiveness, and accountability that define the H&H standard. Supported by more than 600 professionals across 32 offices nationwide, H&H combines national scale with local expertise to deliver projects of any size, type, or delivery method. Our integrated approach reflects our commitment to growing strategically, strengthening our One H&H culture, and continuing to differentiate ourselves through innovation, performance, and client-focused service across the country and around the world. MillionPhones has 12 verified mobile phone numbers for H&H employees across 4 departments, helping sales teams connect with decision-makers directly.
H&H Leadership — Direct Phone Numbers Available
H&H Phone Numbers by Department
| Department | Contacts | Verified Mobiles | Coverage |
|---|---|---|---|
| Other | 4 | 54% | |
| Engineering | 3 | 92% | |
| Executive | 2 | 61% | |
| Marketing | 2 | 93% |