# Heavy haul permitting software that holds the load once and files it across every state

> Heavy haul oversize load permitting is the process of getting state by state authority to move freight that exceeds legal size or weight limits. Federal Interstate limits under 23 CFR Part 658 are 80,000 pounds gross, 20,000 pounds on a single axle and 34,000 pounds on a tandem, with width at 102 inches. Neurobird holds the load dimensions and axle configuration once, then keeps every state application, escort rule and curfew aligned to the same travel dates.

- URL: https://neurobird.com/heavyhaul/
- Product: Neurobird Heavy Haul Oversize Load Permitting Compliance Platform
- Niche: heavy haul oversize load permitting
- Buyer: heavy haul carriers and permit services
- Status: in development, open for early access
- Updated: 2026-08-21

## What Neurobird Heavy Haul Oversize Load Permitting does

- Hold the load dimensions, axle spacings and weights once and apply them to every state
- Track permit status, validity windows and expiry across all states on a single move
- Keep escort, curfew and holiday restrictions attached to the route rather than to memory
- Show the axle configuration against federal and state weight limits before a permit is even filed

## How it works

1. **Describe the load once** Dimensions, axle spacings, weights and configuration are entered once and checked against federal and state limits before you apply.
2. **File and track per state** Each state application carries its own status, fee, validity window and conditions, all pointing at the same load.
3. **Hold the route conditions** Escorts, curfews, holiday bans and restricted structures attach to the route, so the driver leaves with the restrictions rather than a phone call.

## From the source material

> Federal weight standards apply to commercial vehicle operations only on the Interstate Highway System, which consists of approximately 50,000 miles of limited access, divided highways that span the Nation.

Source: FHWA compilation of state truck size and weight laws, https://ops.fhwa.dot.gov/freight/policy/rpt_congress/truck_sw_laws/index.htm

## Industry context

- **80,000** Federal maximum gross vehicle weight on the Interstate system, with 20,000 pounds on a single axle and 34,000 on a tandem, beyond which a permit is required. (source: Electronic Code of Federal Regulations, 23 CFR Part 658, https://www.ecfr.gov/current/title-23/chapter-I/subchapter-G/part-658)
- **102** Federal width limit in inches on the National Network, which is why almost every wide load is a permitted load. (source: Federal Highway Administration, truck size and weight laws, https://ops.fhwa.dot.gov/freight/policy/rpt_congress/truck_sw_laws/index.htm)
- **51** Separate permitting jurisdictions across the 50 states and the District of Columbia, each with its own fees, escorts and restrictions. (source: Federal Highway Administration, state permit practice, https://ops.fhwa.dot.gov/freight/sw/permit_report/index.htm)
- **1975** The year the federal bridge formula was enacted to relate allowable weight to axle spacing, which is why configuration decides feasibility. (source: Federal Highway Administration, bridge formula weights, https://ops.fhwa.dot.gov/freight/publications/brdgcalc/index.htm)
- **1 policy** Federal truck size and weight policy is set nationally but administered by states, which is the root of the multi state permitting problem. (source: Federal Highway Administration, truck size and weight, https://www.fhwa.dot.gov/policy/otps/truck/)

## Pricing

- Single carrier: $160 per operation, per month
- Heavy haul carrier: $340 per operation, per month
- Permit service: $600 per operation, per month

## Questions

### What is oversize and overweight permitting?

Oversize and overweight permitting is the process of getting state by state authority to move a load that exceeds legal size or weight limits. On the Interstate system federal limits under 23 CFR Part 658 sit at 80,000 pounds gross, 20,000 pounds on a single axle and 34,000 pounds on a tandem, with width at 102 inches, and anything beyond that needs a permit from each state crossed.

### Why does one move need so many permits?

Because permitting authority is state by state, and often county and city as well. A 612 mile move across 4 states is 4 separate applications with 4 fee schedules, 4 escort rules and 4 sets of curfew and holiday restrictions, all of which have to agree on the same travel dates.

### What is the federal bridge formula?

A formula that limits weight based on axle spacing and the number of axles, so a heavier load may be legal if it is spread over a longer wheelbase. It is why the axle configuration, not just gross weight, decides whether a route is even worth applying for.

### Does this replace the state permit portals?

No. States keep their portals and their fees. This holds the load once, keeps every application aligned to the same dimensions and dates, and warns you when a permit window and a bridge analysis have drifted apart.

## Sources

- [23 CFR Part 658, truck size and weight](https://www.ecfr.gov/current/title-23/chapter-I/subchapter-G/part-658)
- [FHWA compilation of state truck size and weight laws](https://ops.fhwa.dot.gov/freight/policy/rpt_congress/truck_sw_laws/index.htm)
- [FHWA bridge formula weights](https://ops.fhwa.dot.gov/freight/publications/brdgcalc/index.htm)
- [FHWA oversize and overweight permit practice](https://ops.fhwa.dot.gov/freight/sw/permit_report/index.htm)

## Contact

- office@neurobird.com
- https://neurobird.com/