Department of Transportation contracting by NAICS
The Department of Transportation obligated $13.1B in net prime contract dollars in the 12 months ending Oct 5, 2026. The 69 NAICS markets below cover $12.5B of it.
Largest increases
NAICS markets with the largest dollar growth versus the preceding 12 months.
| NAICS market | Prior 12 mo | Latest 12 mo | Change |
|---|---|---|---|
| 334210 · Telephone Apparatus Manufacturing | $245.6M | $1.2B | Up $1.0B (408.7%) |
| 334511 · Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing | $127.3M | $1.1B | Up $959.3M (753.5%) |
| 541330 · Engineering Services | $1.4B | $1.8B | Up $457.0M (32.9%) |
| 336611 · Ship Building and Repairing | $119.7M | $575.6M | Up $455.9M (380.8%) |
| 541512 · Computer Systems Design Services | $326.9M | $692.3M | Up $365.5M (111.8%) |
Largest declines
NAICS markets with the largest dollar decline versus the preceding 12 months.
| NAICS market | Prior 12 mo | Latest 12 mo | Change |
|---|---|---|---|
| 334220 · Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing | $233.2M | $70.3M | Down $162.9M (69.8%) |
| 238210 · Electrical Contractors and Other Wiring Installation Contractors | $115.1M | $74.0M | Down $41.1M (35.7%) |
| 541620 · Environmental Consulting Services | $35.1M | $15.2M | Down $19.9M (56.6%) |
| 811219 · Other Electronic and Precision Equipment Repair and Maintenance | $28.2M | $15.0M | Down $13.2M (47.0%) |
| 541513 · Computer Facilities Management Services | $141.1M | $131.6M | Down $9.5M (6.8%) |
All DOT NAICS markets
Ranked by net obligations in the latest 12 months.
541330 · Engineering Services
$1.8B334210 · Telephone Apparatus Manufacturing
$1.2B517310 · Telecommunications Resellers
$1.2B334511 · Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing
$1.1B237310 · Highway, Street, and Bridge Construction
$786.7M541512 · Computer Systems Design Services
$692.3M236220 · Commercial and Institutional Building Construction
$657.8M336611 · Ship Building and Repairing
$575.6M541990 · All Other Professional, Scientific, and Technical Services
$557.4M541519 · Other Computer Related Services
$459.0M518210 · Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services
$340.5M541611 · Administrative Management and General Management Consulting Services
$339.7M488111 · Air Traffic Control
$318.6M541511 · Custom Computer Programming Services
$291.7M334111 · Electronic Computer Manufacturing
$201.2M541715 · Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
$137.1M541513 · Computer Facilities Management Services
$131.6M237130 · Power and Communication Line and Related Structures Construction
$118.9M561210 · Facilities Support Services
$95.1M513210 · Software Publishers
$93.4M541810 · Advertising Agencies
$91.8M337214 · Office Furniture (except Wood) Manufacturing
$78.7M238210 · Electrical Contractors and Other Wiring Installation Contractors
$74.0M488390 · Other Support Activities for Water Transportation
$73.8M334220 · Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing
$70.3M483111 · Deep Sea Freight Transportation
$63.5M334290 · Other Communications Equipment Manufacturing
$59.1M541380 · Testing Laboratories and Services
$58.2M562910 · Remediation Services
$55.9M561621 · Security Systems Services (except Locksmiths)
$52.3M488190 · Other Support Activities for Air Transportation
$46.5M561720 · Janitorial Services
$44.9M561612 · Security Guards and Patrol Services
$42.1M611430 · Professional and Management Development Training
$41.9M335999 · All Other Miscellaneous Electrical Equipment and Component Manufacturing
$35.2M611512 · Flight Training
$32.1M335312 · Motor and Generator Manufacturing
$28.8M334419 · Other Electronic Component Manufacturing
$28.1M541690 · Other Scientific and Technical Consulting Services
$22.2M811210 · Electronic and Precision Equipment Repair and Maintenance
$22.0M238220 · Plumbing, Heating, and Air-conditioning Contractors
$21.7M334519 · Other Measuring and Controlling Device Manufacturing
$21.1M517312 · Wireless Telecommunications Carriers (except Satellite)
$19.8M561110 · Office Administrative Services
$16.2M511210 · Software Publishers
$16.0M541310 · Architectural Services
$15.3M541620 · Environmental Consulting Services
$15.2M811219 · Other Electronic and Precision Equipment Repair and Maintenance
$15.0M541720 · Research and Development in the Social Sciences and Humanities
$14.9M238160 · Roofing Contractors
$14.6M541712 · Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)
$12.9M484210 · Used Household and Office Goods Moving
$12.5M238990 · All Other Specialty Trade Contractors
$11.9M334310 · Audio and Video Equipment Manufacturing
$11.5M561990 · All Other Support Services
$11.0M541219 · Other Accounting Services
$10.7M541612 · Human Resources Consulting Services (2007), Human Resources and Executive Search Consulting Services (2002)
$8.7M541211 · Offices of Certified Public Accountants
$8.6M335910 · Battery Manufacturing
$7.2M541910 · Marketing Research and Public Opinion Polling
$7.2M517410 · Satellite Telecommunications
$7.2M334515 · Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
$7.1M488210 · Support Activities for Rail Transportation
$6.4M561730 · Landscaping Services
$6.4M335311 · Power, Distribution, and Specialty Transformer Manufacturing
$6.3M541618 · Other Management Consulting Services
$6.2M335139 · Electric Lamp Bulb and Other Lighting Equipment Manufacturing
$6.1M423610 · Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers
$5.6M519290 · Web Search Portals and All Other Information Services
$5.2MPrime contracts (award types A–D) funded by the Department of Transportation, from USAspending.gov. A market is listed when it had at least $5M in the latest 12 months, $1M in the preceding 12 months, and 10 awards with activity in each period.

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