DOT

Department of Transportation

Procures transportation infrastructure, logistics, safety systems, and IT support. Major buyer of engineering and construction services.

FY2026 Budget

$80B+

infrastructure, transit, safety systems

OSDBU Contact

Office of Small Business Programs - OSBP@dot.gov

2026 Trend

Infrastructure bill funding boost, electric vehicle adoption, autonomous vehicle testing, supply chain modernization

Market Intelligence

Real-time spending data via USAspending.gov

Annual Spend (FY2025)

Total obligated amount for contract awards in the current fiscal year.

$0

Obligated to date

Budget UtilizationNaN%

Top Contract Awardees

$9.5B
$8.9B
$7.3B
$5.2B
$5.1B

WinBidIQ Insight: Department of Transportation is showing high competition among the top 5 vendors. Small businesses should focus on subcontracting opportunities with these leaders or targeting niche set-asides where these giants are restricted.

How to Win Contracts from Department of Transportation

As a major federal contracting entity, Department of Transportation (DOT) commands a FY2026 budget of $80B+. Recent market intelligence indicates a highly active procurement cycle, with obligated spend distributed among 5 primary vendors.With a strategic focus on infrastructure bill (bipartisan infrastructure law) creating 5-10 year buying surge and construction and engineering contracts predominate, this agency presents targeted opportunities for contractors operating within critical NAICS codes like 541320 and 541330.

For emerging contractors, the most effective entry strategy is to identify recompete opportunities — contracts currently held by incumbents that are expiring within the next 12 to 18 months.DOT recompetes often have predictable scopes and defined evaluation criteria, making them significantly easier to bid intelligently than entirely new requirements.

DOT is booming due to infrastructure funding. Excellent for engineering, construction, logistics, and IT firms. Infrastructure projects = predictable, multi-year contracts. Compliance moderate but DBE requirements matter if applicable.

Procurement Focus & Requirements

  • Infrastructure bill (Bipartisan Infrastructure Law) creating 5-10 year buying surge
  • Construction and engineering contracts predominate
  • DBE (Disadvantaged Business Enterprise) set-asides common
  • Multi-state coordination required for highway/transit projects

Top NAICS Codes — DOT

These NAICS codes appear most frequently in Department of Transportation solicitations. Include these in your SAM.gov registration to appear in agency searches and qualify for relevant set-asides.

541320

541330

561210

235110

237310

Common Recompete Categories at DOT

Recompetes — contracts currently held by an incumbent that are coming up for renewal — are the highest-probability opportunity for new entrants. These categories see recurring recompetes at Department of Transportation:

1

Transportation infrastructure engineering and design

2

Transit system operations and management

3

Logistics and supply chain systems

4

Safety and compliance monitoring systems

Track live recompete opportunities in WinBidIQ

Department of Transportation Contracting: FAQs

How much does Department of Transportation spend on contracts annually?+
Department of Transportation (DOT) has a FY2026 budget of $80B+ (infrastructure, transit, safety systems). Contract spending goes toward 5 primary NAICS code categories, with infrastructure bill funding boost, electric vehicle adoption, autonomous vehicle testing, supply chain modernization. Small businesses compete for set-aside contracts across all major spending categories.
What NAICS codes does DOT use for small business contracts?+
Department of Transportation most frequently awards contracts under NAICS codes 541320, 541330, 561210, 235110, 237310. These cover Infrastructure bill (Bipartisan Infrastructure Law) creating 5-10 year buying surge, Construction and engineering contracts predominate, DBE (Disadvantaged Business Enterprise) set-asides common. Register in SAM.gov with these codes and ensure your size is within SBA size standards for each code to qualify for set-asides.
How do I contact DOT's small business office?+
Department of Transportation's small business contact is: Office of Small Business Programs - OSBP@dot.gov. This office — typically called the OSDBU or OSBP — runs small business outreach events, matchmaking sessions, and subcontracting fairs. Attending these events is one of the most effective ways to get pre-RFP visibility with contracting officers.
What types of contracts does DOT award to small businesses?+
Department of Transportation awards set-aside contracts under multiple socioeconomic programs including small business, 8(a) Business Development, WOSB (Women-Owned Small Business), SDVOSB (Service-Disabled Veteran-Owned), and HUBZone. Common contract vehicles include Transportation infrastructure engineering and design and Transit system operations and management. Most contracts over $25K are posted on SAM.gov.
What is the best strategy to win a first DOT contract?+
Start by identifying recompete opportunities — contracts expiring within 12 months where the incumbent may be vulnerable. Department of Transportation recompete categories include: Transportation infrastructure engineering and design; Transit system operations and management; Logistics and supply chain systems. Build past performance through subcontracting first, then bid on small set-asides. Attend OSDBU outreach events to meet program managers before RFPs drop.
What is DOT's procurement trend for 2026?+
Infrastructure bill funding boost, electric vehicle adoption, autonomous vehicle testing, supply chain modernization. DOT is booming due to infrastructure funding. Excellent for engineering, construction, logistics, and IT firms. Infrastructure projects = predictable, multi-year contracts. Compliance moderate but DBE requirements matter if applicable. Monitor SAM.gov and USASpending.gov for emerging solicitations and forecast notices — ideally 6-12 months before RFP release.

Find DOT Contracts Matched to Your Company

WinBidIQ monitors SAM.gov daily and scores every Department of Transportation solicitation by fit to your company profile — NAICS codes, certifications, size, and past performance.

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