ODOT said fire activity can shift quickly, allowing highways to close or reopen with little notice. The agency is encouraging travelers, including commercial drivers, to check TripCheck.com for current road conditions, closures, and delays before heading out.

ODOT Crews Responding Across the State

Transportation crews continue working around the clock by staffing road closures, setting up traffic control, piloting traffic when possible, assessing roadway damage, coordinating with emergency responders, and reopening highways as conditions allow.

ODOT said roads are closed only when needed to protect the public or give firefighters and emergency crews room to work safely. Drivers are asked to follow all road closures, traffic control devices, and directions from flaggers, and to stay clear of closed areas and emergency equipment.

Smoke and Fire Conditions Can Change Quickly

The department cautioned that highways may reopen before repairs are completed. Drivers could encounter damaged guardrails, missing signs, or other roadside damage in burned areas until crews are able to return.

Smoke may also reduce visibility without warning. ODOT advises motorists to slow down, increase following distance, and use extra caution when traveling through smoky conditions. Power outages near wildfire areas may also affect traffic signals, and dark signals should be treated as four way stops.

TripCheck.com remains ODOT’s recommended source for current highway conditions. The agency noted that GPS navigation may direct drivers onto forest service roads or other routes that are not intended for highway traffic.

The TDUSA editorial team creates practical, driver focused content covering trucking news, industry updates, safety, regulations, and career information for professional truck drivers across the United States. Each article is built to reflect real world experience, industry developments, and information drivers can use on and off the road.

Last Updated: July 29, 2026

Source: The Trucker

The post Oregon DOT Warns Wildfires Are Affecting Travel on State Highways appeared first on Truck Drivers USA.

By the time a driver reaches a closure point, the decision has often been made using forecasts, fire behavior models, and conditions developing miles away from the highway. Waiting until smoke or flames become obvious would leave far fewer options for drivers, emergency crews, and nearby communities.

A Clear Highway Doesn’t Always Mean a Safe Highway

Wildfires rarely move in a predictable direction. Wind shifts, steep terrain, and dry vegetation can change the pace and direction of a fire in a matter of minutes.

That’s one reason transportation agencies rely on fire behavior forecasts rather than visible conditions alone. If projections show a fire is likely to threaten a corridor or reduce visibility before traffic can safely clear the area, restrictions may be introduced well before the roadway itself is affected.

For drivers approaching the area, the closure can seem unnecessary. For the people managing the incident, it’s often intended to prevent a much larger problem from developing an hour later.

Smoke Creates Challenges Drivers Never See

Most drivers think of smoke as a visibility issue, but that’s only part of the picture.

Aircraft used to monitor fire activity or drop water may be grounded when smoke becomes too dense. Fire crews working along the highway can lose sight of changing fire conditions. Emergency vehicles entering and leaving the incident also need predictable traffic patterns to move safely.

Those factors can influence traffic decisions long before visibility reaches the point where most drivers would expect a highway to close.

Detours Don’t Always Work for Commercial Trucks

Passenger vehicles can often be redirected onto local roads with relatively few limitations. Commercial trucks don’t always have that flexibility.

A detour that looks reasonable on a map may include bridges with lower weight limits, intersections that are difficult for longer combinations to navigate, or restrictions that prevent oversized loads from using the route altogether. In some cases, holding trucks temporarily is safer than directing them onto roads that were never designed to handle heavy commercial traffic.

That’s why commercial drivers may encounter instructions that differ from those given to passenger vehicles during the same incident.

Reopening a Freight Corridor Takes More Than Extinguishing the Fire

The public often focuses on the moment a wildfire is contained. For transportation agencies, another phase begins.

Bridge inspectors check structures that were exposed to prolonged heat. Maintenance crews remove trees that could fall into the roadway. Engineers evaluate slopes where burned vegetation no longer helps stabilize soil. Utility companies restore damaged infrastructure before traffic returns to normal.

None of those tasks receive much public attention, but they often determine when restrictions can safely be removed.

The Goal Is to Prevent Drivers from Running Out of Options

Wildfire closures are based as much on where conditions are headed as where they are today. Once traffic becomes trapped between a fast-moving fire and a blocked highway, there are very few good solutions.

Restricting traffic before that happens may inconvenience drivers, but it also gives emergency responders room to work, protects evacuation routes, and reduces the likelihood that motorists become part of the emergency itself.

Frequently Asked Questions

Do wildfire closures affect interstate highways differently than state highways?

No. Any highway may be restricted if emergency officials determine travel conditions have become unsafe. The decision depends on conditions surrounding the incident rather than the highway designation.

Why are commercial trucks sometimes held longer than passenger vehicles?

Large trucks require more space to maneuver, accelerate more slowly, and may not be able to use every available detour. Those factors can influence how traffic is managed during an active wildfire.

Can roads reopen even if firefighters are still working nearby?

Yes. Portions of a highway may reopen while firefighting operations continue in surrounding areas if transportation officials determine traffic can move safely through the corridor.

The TDUSA editorial team creates practical, driver-focused content covering trucking news, industry updates, safety, regulations, and career information for professional truck drivers across the United States. Each article is built to reflect real-world experience, industry developments, and information drivers can use on and off the road.

Last Updated: July 22, 2026

The post Why Smoke Can Shut Down a Truck Route Before You Ever See a Wildfire appeared first on Truck Drivers USA.

Efforts are ongoing to repair Interstate 40 through the Pigeon River Gorge after damage caused by Hurricane Helene. Crews are making steady progress (NCDOT via X).

The closure of I-40, a major route linking North Carolina and Tennessee, has presented significant hurdles for truck drivers. Many tractor-trailers are inadvertently diverting to narrow, two-lane mountain roads, leading to delays and occasional gridlocks. Officials from both states are emphasizing the importance of sticking to approved truck routes and avoiding reliance on GPS systems designed for passenger vehicles.

“Some trucks are following GPS routes that are programmed for passenger vehicles,” shared North Carolina Department of Transportation (NCDOT) spokesperson David Uchiyama. “Those are routes that accommodate passenger vehicles. But they’re steep, winding, curvy roads, not built for trucks.”

A Critical Interstate Severed

Since September 27, when floodwaters from Hurricane Helene washed out more than a mile of the eastbound lanes near the North Carolina/Tennessee state line, I-40 has remained closed. This critical artery, which previously carried over 25,000 vehicles daily—many of them commercial trucks—has been effectively severed.

Addressing the closure, both state governments launched awareness campaigns, utilizing social media, electronic road signs, cellphone alerts, and truck cab notifications. NCDOT’s DriveNC website now displays a “truck closure” marker to identify areas where vehicles over 30 feet are prohibited due to frequent incidents of trucks getting stuck—approximately two dozen so far.

Challenges Persist

Despite these efforts, some drivers continue to face challenges. Tennessee Highway Patrol’s Lieutenant Bill Miller highlighted the issue, noting that truckers frequently drive east on I-40 until they encounter road closure barricades, forcing them to backtrack.

“Many truck drivers are ignoring the signs posted on I-40 East daily for one reason or another,” Miller explained via email. “They then get turned around and continue to rely on their GPS, and they are routed to secondary roads in Cocke County, such as Big Creek Road and Hartford Road. These roads are small and are not wide enough to accept commercial traffic.”

This isn’t a new challenge. Similar issues arise during snowstorms or accidents in the Pigeon River Gorge, which often prompt truckers to search for alternative, but ill-suited, routes. One particularly troublesome route, N.C. 209, even earned the nickname “The Rattler” due to its winding path through Pisgah National Forest. The increase in incidents since Hurricane Helene has prompted NCDOT to erect additional warning signs.

Stepped-Up Enforcement

The mountain roads themselves haven’t become less truck-friendly; it’s simply that the closure has increased the volume of drivers seeking alternative routes that have always been closed to large commercial vehicles. To address the issue, state troopers in both North Carolina and Tennessee have increased enforcement efforts. Last week alone, the North Carolina Highway Patrol issued over 100 citations to truckers using non-truck-approved routes—a statistic NCDOT shared in a Facebook post aimed at the trucking community.

“We don’t want to issue citations,” explained 1st Sgt. Chris Knox of the State Highway Patrol. “But we don’t want to see them stuck or turned around or overturned. That further complicates people navigating those roads who should be on those roads.”

Fewer Wrong Turns on Mountain Roads

While the problem hasn’t disappeared, officials report progress. The partial reopening of Interstate 26 in Erwin, Tenn., on October 30 has provided a temporary alternative, albeit with some restrictions, such as one-lane traffic in each direction while bridges over the Nolichucky River undergo reconstruction.

NCDOT expects to reopen a section of I-40 in the Pigeon River Gorge by early next year. Plans involve converting the westbound lanes into a two-way roadway, separated by a concrete barrier and with a reduced speed limit of 40 mph.

“All drivers need to keep in mind it will be slow going,” Uchiyama said.

Recommended Detours for Truckers

Until repairs are complete, NCDOT is advising truckers traveling between North Carolina and Tennessee to use one of two alternative routes:

• I-77 to I-81

• U.S. 74

By adhering to these routes, truck drivers can avoid unnecessary delays and potential hazards on unsuitable roads.

Source: Transport Topics

The post Truckers Face Challenges with I-40 Closure, Finding Mountain Roads Difficult appeared first on Truck Drivers USA.