Chattanooga Traffic Data Shows 26 Hours Lost Annually to Congestion

Chattanooga drivers lose an average of 26 hours per year stuck in traffic, making the city the second-worst in Tennessee for congestion. The primary cause is more than 20,000 daily trucks passing through the I-75/I-24 interchange.

Core Congestion Numbers

These delays stem directly from freight movement at the I-75/I-24 interchange, where daily truck counts exceed 20,000. The city sits at the intersection of Interstates 24, 75 and 59, a configuration that funnels large volumes of commercial traffic through residential and downtown corridors each weekday.

Safety Statistics

Hamilton County recorded 52 traffic fatalities in 2024. That total equals roughly 14.2 deaths per 100,000 residents. Local authorities have cited these figures when outlining plans to widen sections of I-24 to reduce freight-related bottlenecks.

Transit and Active-Transport Counts

The Chattanooga Area Regional Transportation Authority runs between 15 and 17 bus routes and operates a free Downtown Electric Shuttle serving tourist districts. Separately, the Bike Chattanooga system maintains more than 300 bikes across 40-plus locations. The network connects to a 23-plus-mile riverwalk and one of the country’s longest pedestrian bridges, offering residents measurable alternatives to single-occupancy vehicle trips.

Chattanooga Metropolitan Airport provides direct flights to eight cities, another data point that underscores the region’s role as a Southeast transportation hub. These combined figures-truck volumes, lost hours, fatality counts and route totals-form the quantitative baseline local planners use when evaluating infrastructure adjustments.

Officials continue to reference the 2024 fatality total and the 26-hour annual delay average when prioritizing widening work on I-24. Drivers can monitor real-time conditions through CARTA updates and the city’s existing traffic management tools while those projects advance.