What this tracks
This dataset maps the exact locations and dimensions of travel lanes on Tennessee interstates, state routes, and select locally maintained roads.
Why it matters to you
If you’re planning a trucking route through Shelby County, this data tells you whether specific ramps (like concrete on-ramps) can accommodate your vehicle’s width. Small businesses shipping oversized loads can check WIDTH values to avoid routes with narrow lanes. Commuters can also identify ramp locations (FEAT_DESC) to anticipate merge points during construction season.
How to read this data
FEAT_DESC — Describes the lane type, like “Concrete On-Ramp” or “Main Travel Lane.”
WIDTH — Lane width in feet (sample: 11.25 ft). Critical for large vehicles.
ROUTE — Highway identifier (sample: I0240 for I-240).
LOC_DESC — Position relative to the road (sample: “Right” for right-side lanes).
Try it yourself
Check the width of the nearest interstate on-ramp by searching TDOT’s map for your exit number (EXIT_ field, e.g., “0016”).