Summary — HF 979 (2025): Vehicles of Excessive Size and Weight — Permits and Fees
Status and timeline
- Introduced: March 27, 2025
- House passage: April 15, 2025 (yeas 94, nays 0)
- Senate passage: May 14, 2025 (yeas 44, nays 1)
- Enrolled: May 22, 2025
- Signed by Governor: June 6, 2025
- Note: Amendment S-3154 was filed during consideration but later withdrawn.
Purpose
HF 979 revises Iowa law governing oversize/overweight (OS/OW) vehicle permits and single‑trip registration, clarifies local authority roles and dispute resolution, adjusts allowable weight tolerance for permitted movements, and sets a fee standard for single‑trip registration.
Key provisions and changes
- All-systems permits and local authority coordination (amends §321E.3):
- The DOT may issue “all‑systems” permits valid on paved primary and secondary highways and streets (including local truck routes), except where movement is prohibited by law (e.g., certain interstates).
- Local authorities may designate local roads as “not valid” for all‑systems permits only in writing; the DOT may review such designations.
- Local authorities must justify designations (especially for paved farm‑to‑market roads and designated truck routes); disputes are resolved under chapter 17A administrative rules.
- A permitted vehicle may use the most direct route between a load/unload site and the nearest road valid for all‑systems permits. If all access roads are designated not valid, the local authority must cooperate with the DOT to find an alternate practicable route.
- The DOT must adopt implementing rules.
Increased allowable weight variance (amends §321E.8):
- Vehicles with loads that exceed the statutory maximum gross weight under §321.463 may operate under an all‑systems permit if the gross weight excess is not more than 12.5% (previous statutory tolerance referenced as 12%); such permitted vehicles exceeding 80,000 pounds are prohibited from traveling on any portion of the interstate system.
Single‑trip registration and fees (amends §321E.12):
- Vehicles operating under a permit must be registered for the gross weight of the vehicle and load; a trip permit issued under §326.23 generally cannot substitute for that registration.
- A vehicle on a single‑trip permit under §321E.9 may be registered with the DOT on a single‑trip basis for the combined gross weight of vehicle and load.
- Fee for single‑trip registration: $4.00 per ton for each ton exceeding 40 tons.
Other: Section 321E.9, subsection 4, paragraph d was struck (text removed from law as enacted).
Who is affected
- Iowa DOT: rulemaking and route approvals, dispute resolution, issuing permits and single‑trip registrations.
- Local governments: may limit permit access to local roads but must document/justify decisions and coordinate with DOT on alternate routes.
- Motor carriers, common carriers, haulers, and shippers: changes to allowable overweight tolerance, clearer access rules for permitted movements, and a specific single‑trip registration fee ($4/ton over 40 tons).
- Roadway and bridge infrastructure: increased coordination and review of structural suitability for permitted loads.
Procedural/administrative notes
- Disputes between local authorities and DOT over “not valid” designations are to be resolved via administrative rulemaking procedures (chapter 17A).
- The bill requires DOT to adopt rules to implement the local coordination and permit provisions.
- Effective date not specified in the enrolled summary; implementation depends on rulemaking and administrative processes following enactment.
