DelDOT Commercial Entrance Permits

Statutory authority and purpose

• 17 Del. C. § 146 — DelDOT's statutory authority to regulate vehicular and pedestrian access to state highways.
• Policy purposes: protect public safety, maintain traffic flow, preserve highway right-of-way drainage, regulate drainage from adjacent properties into the highway drainage system.
• Authoritative documents: DelDOT Development Coordination Manual and Standards and Regulations for Access to State Highways.
• Governing principle: property owners have a right to reasonable access — not unlimited access.

Primary source: deldot.gov.

The commercial entrance permit application packet

Submitted to the Public Works Engineer via DelDOT's online portal:

• DelDOT permit application form — fully completed.
• DelDOT Planning Approval - Entrance Plan Approval letter — issued by Development Coordination, signed by the Subdivision Engineer.
• Proof of property ownership — official document from the local land use agency, or notarized affidavit with Tax Map ID.
• Power of Attorney — required if someone other than the property owner signs; executed, notarized, in DelDOT's format. Permit holder remains the property owner.
• Recorded plan — consistent with the DelDOT "No Objection to Recordation" stamped plan, with signatures, seals, plot book, and page number.
• Approved construction plans — stamped "APPROVED" by DelDOT's Subdivision Engineer; electronic PDF + paper copies.
• Itemized construction cost estimate — unit prices and quantities for each item within State Right-of-Way.
• Security — bond, commercial letter of credit, or certified check with escrow, at 150% of the approved construction cost estimate. Not required for federal/state/local government projects.
• NCHRP 350 Packet / MOT submittal — Maintenance of Traffic plan and crash-test approval documentation obtained via DelDOT's Traffic Safety Officer.
• Letter of Intent — describes previous and new business, and entrance modifications if applicable.
• Pre-construction meeting — scheduled by DelDOT prior to permit issuance.

The 150% security is the sharpest financial edge of the packet. On a $200,000 ROW improvement, that's $300,000 secured, released only on satisfactory completion. Budget accordingly.

Traffic Impact Study (TIS) — when it's required

DelDOT may require a TIS or Traffic Operational Analysis (TOA) for development projects generating sufficient traffic:

• TIS threshold — 500+ vehicles per day (vpd) in average weekday or weekend trips, or 50+ vehicles per hour (vph) during any one critical hour.
• TOA threshold — 200+ daily trips may trigger a TOA when a TIS isn't required.
• Discretionary triggers — DelDOT can require a TIS at lower thresholds if site-specific conditions warrant.

Level of Service (LOS) goals: LOS C or better in non-urban areas, LOS D or better in urban areas during peak hours. A TIS demonstrates whether these standards are met or flags required mitigation (turn lanes, signals, widening, etc.).

TIS is a real cost — $15K-$100K+ depending on project scope and required analysis. Also real timeline — 8-16 weeks from engagement to final report in many cases, with iteration if DelDOT comments require revisions.

How DelDOT's permit integrates with county land use

DelDOT and DE's three counties coordinate tightly:

• County referrals to DelDOT. New Castle, Kent, and Sussex refer rezoning, subdivision, and entrance permit applications to DelDOT for review against corridor preservation policies and longer-term planning.
• DelDOT's advisory role. TIS findings inform mitigation that DelDOT seeks through the local land use approval process — including the "Letter of No Objection to Recordation."
• Local approval prerequisites. Some applications (e.g., solar farms) require local land use approval before DelDOT's permit process can complete.
• Proof of ownership from local land use agency — a required document in the DelDOT permit application.
• Utility coordination. Applicants responsible for any needed local approvals/permits for utility installations within the ROW.

For the county-zoning context, see our DE County Zoning essay.

What the permit is not

• Not a driveway design freebie. The permit applies access management standards — sight distance, driveway spacing, curb cuts, profile, pavement, drainage. Design must conform.
• Not a substitute for county permits. Building permit, stormwater review, Conservation District approval, zoning — all separate.
• Not a one-time check. Changes in use or operation that materially change trip generation may require re-review.
• Not available without a TIS when trips exceed thresholds. Don't plan around avoiding TIS on a project that obviously generates 500+ vpd.

Timeline considerations

From project concept to issued DelDOT entrance permit:

• Pre-application scoping with Development Coordination — weeks.
• TIS preparation (if required) — 8-16 weeks typical.
• Entrance plan preparation and DelDOT review — iterative; weeks to months.
• Subdivision Engineer approval — gate before final entrance permit application.
• Formal entrance permit application + packet — weeks to review, including pre-construction meeting.
• Security posting — can take time to arrange bond/LOC/escrow.
• Permit issuance — construction can begin once permit and pre-construction meeting complete.

Total timeline from commitment to construction start commonly 6-12 months for projects with TIS. Small-scale projects without TIS can move faster but still engage a multi-step process.

Common developer missteps

• Assuming driveway work is routine. On state highways, it's a regulated access approval.
• Skipping pre-application with Development Coordination. Their input at concept saves rework.
• Under-scoping TIS. Commercial centers, drive-through restaurants, and high-traffic retail often trip the 500 vpd threshold faster than expected.
• Not budgeting for 150% security. A material capital commitment during construction.
• Missing corridor preservation constraints. Some DE corridors have explicit restrictions on new driveway locations.
• Treating DelDOT and county approvals as sequential when they can run in parallel. The referral process allows coordinated review.

How DE's framework compares to neighbors

• Pennsylvania. PennDOT Highway Occupancy Permit (HOP) — analogous framework. Thresholds and specific process differ.
• New Jersey. NJDOT major access permits + local road approval coordination.
• Maryland. SHA (State Highway Administration) access permits; separate county DPW coordination.
• Virginia. VDOT Land Use Permit process; entrance permits integrated with local site plan review.
• Delaware. DelDOT entrance permit with 150% security, TIS thresholds at 500 vpd / 50 vph, strong county coordination.

What to do with this

If your DE project fronts a state highway: DelDOT entrance permit is required. Engage Development Coordination at concept.

If estimated trips may exceed 500 vpd or 50 vph: budget for TIS. Engage a qualified traffic engineer early.

If timeline matters: run DelDOT and county approvals in parallel, not sequentially.

If budgeting: 150% security plus TIS cost are both real line items.

For the broader DE context, see our DE County Zoning essay, DE Conservation District essay, and DE RPv essay.

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