State Route 320 closes Oct. 23-26 near Prosperity Lane and C.B. Robinson Bridge lanes close Oct. 20-23. Plus I-75 at Hamilton Place and city paving.

Last checked Oct. 19, 2026. This page is refreshed every week. Facts come from the Tennessee Department of Transportation’s Roadway Activity Report for the Lower East and Upper Cumberland, Oct. 15-21, 2026, TDOT SmartWay and the City of Chattanooga’s latest news and transportation projects pages.

The biggest job on Chattanooga roads is TDOT’s rebuild of the I-75 interchange at Hamilton Place, with lane shifts and a lower speed limit through the work zone. This week also brings a lane-by-lane inspection of the C.B. Robinson Bridge and a weekend closure of State Route 320 for drainage work. For live conditions, check TDOT SmartWay or dial 511.

Who to call

This week: Monday, Oct. 19, to Saturday, Oct. 24

  • C.B. Robinson Bridge (State Route 319, DuPont Parkway): routine inspection Tuesday to Friday. The right lane and shoulder close daily 8:30 a.m. to 5 p.m.: northbound Tuesday and Wednesday, Oct. 20-21; southbound Thursday and Friday, Oct. 22-23.
  • State Route 320 between Prosperity Lane and Vance Road: closed from 5 a.m. Friday, Oct. 23, to 5 a.m. Monday, Oct. 26, for storm drainage and clearing on the project to replace the bridge over the CSX railroad. A signed detour will be posted. Daily flagging 7 a.m. to 5 p.m. on other days while utility poles are moved.
  • City paving, Monday to Friday, Oct. 19-23: single-lane closures with flaggers on Tennessee Avenue from W. 40th Street to the Georgia line, W. 14th Street between Market and Cowart streets, W. 37th Street between Tennessee Avenue and Broad Street, Fagan Street, Fairoak Place, Ohls Avenue, W. 45th, 46th and 53rd streets, and Fourth Avenue between E. 24th Street Place and E. 28th Street. Old Mountain Road between Roy Street and St. Elmo Avenue may close fully because the lanes are narrow. On-street parking is restricted while crews work. See the city paving map.
  • Fort Street between E. 13th and E. 14th streets: closed through Saturday, Oct. 24, for a private event.

Ongoing state projects

  • I-75 at the Hamilton Place Mall interchange: the State Route 153 southbound ramp to I-75 northbound is down to one lane. Traffic is shifted on I-75 in both directions and on the Shallowford Road and Hamilton Place Mall ramps. Hamilton Loop Road is closed between the intersections near Markman’s Jewelers and Texas Roadhouse for a retaining wall and drainage. The speed limit is lowered through the project. Nightly lane closures are allowed 8 p.m. to 6 a.m.
  • State Route 17 from Campbell Street to State Route 153: resurfacing. Flaggers for pavement markings nightly 8 p.m. to 6 a.m. through Saturday, Oct. 31.
  • U.S. 41/64/74 (State Route 2), TDOT log miles 0 to 2.74 in Hamilton County: milling and paving with flaggers 7 a.m. to 6 p.m. through Oct. 31.
  • St. Elmo Avenue (State Route 17) between 56th and 57th streets: flagger lane closures 9 a.m. to 2 p.m. for utility work through Dec. 18. Also between 43rd and 44th streets through Wednesday, Oct. 21.
  • Signal Mountain Road (State Route 8) between Runyan Drive and Glendale Drive: flagger lane closures 9 a.m. to 2 p.m., Monday, Oct. 19, through Dec. 4.
  • Suck Creek Road (State Route 27): flagger lane closures between River Canyon and Signal Mountain Road through Oct. 30 for EPB maintenance, and between the Signal Mountain sewer plant and Southview Street, 9 a.m. to 2 p.m., Oct. 19 to Dec. 4.
  • Scenic Highway (State Route 148) on Lookout Mountain between Crandell Avenue and Stonedge Road: flagger lane closures 9 a.m. to 2 p.m. through Jan. 31, 2027.

City projects

  • Cowart Street between W. 26th and W. 27th streets: closed through Dec. 31 for construction of an apartment complex.
  • Hixson Pike through Riverview: the Public Works Department is taking public feedback on two options to re-stripe Hixson Pike between Tremont and Dorchester streets and Barton Avenue, both with fewer southbound lanes and more parking.
  • Heritage Landing Drive: the city is replacing the culvert under the road after a sinkhole. Project page.
  • The city’s resurfacing map shows planned and finished paving since fiscal year 2020.

Special event closures are posted by the city each week in its latest news. The next list had not been posted when this page was checked Monday, Oct. 19.

What this means for you

  • Allow extra time on I-75 near Hamilton Place at any hour, and expect nightly lane closures.
  • Avoid State Route 320 at Prosperity Lane from Friday morning, Oct. 23, to Monday morning.
  • Watch for flaggers on Tennessee Avenue and in St. Elmo during the day all week.

Related guides: getting around Chattanooga and who to call at City Hall.

Frequently asked questions

Where can I check Chattanooga road closures right now?

TDOT’s SmartWay map at smartway.tn.gov shows live closures, crashes and cameras on interstates and state routes; dial 511 in Tennessee for the same. The City of Chattanooga posts city street closures on its road closures map and in weekly news releases.

What is happening on I-75 at Hamilton Place?

TDOT is rebuilding the I-75 interchange at Hamilton Place. The State Route 153 southbound ramp to I-75 northbound is down to one lane, traffic is shifted at the Shallowford Road ramps, the speed limit is lowered and nightly lane closures are allowed from 8 p.m. to 6 a.m.

Is the C.B. Robinson Bridge closing?

Not fully. TDOT will close the right lane and shoulder daily from 8:30 a.m. to 5 p.m. for a routine inspection: northbound Tuesday and Wednesday, Oct. 20-21, and southbound Thursday and Friday, Oct. 22-23.

Who do I call about a pothole on a Chattanooga street?

Call Chattanooga 311 at 423-643-6311 or use the Chatt311 app. Problems on interstates and state routes go to TDOT.