CNCounty News

Podcast: Heavier truck proposals in Congress threaten county bridges

Industrial carriers blue and white big rig semi-truck tractors transporting cargo on dry van semi-trailers running on the truss metal arch I-5 Interstate Bridge between Washington and Oregon across  the Columbia River.

As Congress considers proposals to allow heavier semi-trucks on U.S. highways, county officials across the country should be sounding the alarm. 

The potential consequences for local infrastructure, particularly bridges, are staggering. A recent study, The Impacts of Heavier Trucks on Local Bridges, (conducted by NACo and the National Association of County Engineers, with the input of numerous county highway officials), underscores the risks to infrastructure across the country should Congress green light heavier trucks. The upcoming highway reauthorization process promises to bring this issue to a head, and the stakes could not be higher for county officials. 

At the heart of this debate is a proposal to increase the maximum allowable truck weight to 91,000 pounds. The current limit is 80,000 pounds.

Congress has already taken steps toward making this change a reality. Last year, H.R. 3372, a bill proposing a pilot project to allow 91,000-pound trucks on U.S. highways, was passed out of the House Transportation and Infrastructure Committee, with attempts to bring it to the House floor for a vote. 

While this pilot project allows any state to increase weights for a period of up to 10 years, it is just the beginning of an unfunded federal mandate for localities as roads and bridges face costly damage due to the added weight. As trucks do not load and unload on interstates, these heavier trucks will find their way onto local roads and bridges across the country.

According to the study, which examined local bridges off the National Highway System, a staggering 72,240 bridges would be put at risk by these heavier trucks. The cost to replace those bridges is estimated to be $60.8 billion. For counties specifically, the financial burden is overwhelming. Of the total bridges at risk, 40,907 are owned by county governments. The study estimates that replacing these county-owned bridges would cost $20 billion—a monumental price tag for county governments already struggling to maintain existing infrastructure. 

County budgets are tight, and asking local taxpayers to foot such an enormous bill is both unrealistic and unfair.

Counties are already overburdened with the responsibility of maintaining America’s bridges. Despite owning 36% of all bridges nationwide, counties oversee 51% of the bridges rated in poor condition. This overrepresentation underscores a critical point: Counties have struggled for years with underfunding from the federal government and growing maintenance backlogs. Now, with the potential of heavier trucks on the horizon, those challenges could quickly become insurmountable.

The data makes one thing clear: Heavier trucks would disproportionately harm county-owned infrastructure. As bridges deteriorate under the strain of increasing truck weights, local officials would be forced to make difficult choices — whether to raise taxes, cut services or simply close failing bridges. 

None of these options are acceptable for the millions of Americans who rely on safe, functional roads and bridges for their daily commutes, commerce and emergency services.

For rural communities, particularly in areas with large rivers, the closure of even a single bridge can have a devastating ripple effect. Farmers, small businesses and emergency responders all depend on safe and accessible transportation networks. Forcing rural counties to close critical infrastructure due to unsafe bridges would be a step backward for these already vulnerable areas.

County officials cannot afford to sit on the sidelines as this debate unfolds. The time to speak out is now, before decisions are made that could irreparably damage local infrastructure and finances. 

If you are concerned about the impact of heavier trucks on your community’s infrastructure, now is the time to act. Please reach out to me at mmuir@cabt.org. My organization, Coalition Against Bigger Trucks, can equip you with talking points that convey key messages and data demonstrating that bigger trucks have no place on our roads. We can also provide you with contact information for your legislators in Washington, D.C. 

The future of America’s roads and bridges depends on county officials and concerned citizens raising their voices before it’s too late. Let’s ensure that our local infrastructure is preserved, not crushed under the weight of heavier trucks. 

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