Si Engineering, P.C.
City-funded organization
SI Engineering, P.C. is a Manhattan-based civil, structural, and transportation engineering consulting firm incorporated in 2003, working on bridge, roadway, water, transit, and aviation infrastructure projects. It holds $62.9 million in active NYC Department of Design and Construction contracts as of August 2026 (4 contracts) and has been awarded $233.8 million since 2011 across 46 contracts, with $60.9 million paid to date.
- Industry (per city contracts)
- Professional Services
- City contracts (active)
- $62,943,684 · 5 contracts
- Awarded all-time
- $233,887,316 · 46 since 2011, incl. expired
- Paid to date
- $62,164,461
- Won without a fresh bid
- 11% of contract value · $26,500,000 · 3 contracts
- Based in
- New York, NY
Holds contracts at
- Department of Design and Construction City agency
City contracts
Registered city contracts, largest first by current contract value (not amount spent): running now, then registered to start later, then ended. Totals count every registered contract. Each line shows its Checkbook contract ID. The tag on each row is how it was awarded (“no-bid” = non-competitive).
- HWCRQ06M, Requirements Contracts for Resident Engineering In Department of Design and Construction · MMA185020258807204 $50,000,000
- HWX006-01 - REI Services TO #06A RECONSTRUCTION Department of Design and Construction · CTA185020268805881 $4,143,952
- REI Services Department of Design and Construction · CTA185020258806618 $4,041,328
- REI Svcs for Simple Upgrades Ped Ramps - Queens Department of Design and Construction · CTA185020248808488 $3,759,992
- Design Services for Multi Site Safety Department of Design and Construction · CTA185020228802069 $998,412
- RC for Engineering Design, Citywide (Medium) Department of Design and Construction · MMA185020186000253 · ended 2021 $30,000,000
- HWCRQ05B, Reqs. Cont. for REI services, type B Department of Design and Construction · MMA185020216201377 · ended 2024 $25,000,000
- HWCRQ05B, Renewal of Requirements Contract for Resident Engi Department of Design and Construction · MMA185020248805218 · ended 2025 $20,500,000
- Requirements Contract for CM Services Small Projects Department of Design and Construction · MMA185020176201041 · ended 2020 $12,000,000
- RC for REI Services Small Infra Projects, Citywide Department of Design and Construction · MMA185020176000015 · ended 2020 $12,000,000