title: Best Time to Leave to Avoid Traffic in St. Louis
url: https://boardspy.site/blog/best-time-to-leave-st-louis-avoid-traffic/
type: Article
dateModified: 2026-10-01
publisher: BoardSpy
quick_answer: Quick answer: St. Louis rush hour runs roughly 7:00–9:00 a.m. and 4:00–6:00 p.m. The metro sits outside the national congestion rankings — the typical US driver lost 49 hours in 2025 — and most days here are genuinely easy. The exception is one structure: the Poplar Street Bridge carries I-55, I-64 and US-40 across nine lanes, around 100,000 vehicles a day, making it the second most heavily used bridge on the Mississippi. The best time depends on whether your route crosses it — BoardSpy checks your St. Louis route and tells you when to leave today.
primary_keyword: best time to leave st louis to avoid traffic
keywords[6]{term}:
  best time to leave st louis to avoid traffic
  best time to leave st. louis
  st louis rush hour times
  when to leave st louis traffic
  poplar street bridge traffic
  st louis mississippi bridge congestion
faqs[7]{q,a}:
  When does St. Louis traffic die down?,Morning traffic dies down after about 9:00 a.m.; evening traffic after about 6:00 p.m.; the Poplar Street Bridge decides most bad St. Louis commutes.
  What is the best time to leave to avoid traffic in St. Louis?,Generally before 7:00 a.m. or after 9:00 a.m. in the morning, and outside 4:00–6:00 p.m. in the evening. St. Louis peaks are narrower than in the largest metros, so a 15-minute shift often clears what would take 30 elsewhere. If your route crosses the Poplar Street Bridge, check its condition before you commit.
  When is St. Louis rush hour?,Roughly 7:00–9:00 a.m. and 4:00–6:00 p.m. on weekdays, with the Poplar Street Bridge approaches and I-64 through the central corridor the heaviest stretches.
  Which interstates does the Poplar Street Bridge carry?,I-55, I-64 and US-40, across nine lanes. It also carried I-70 until 2014, when that route moved to the Stan Musial Veterans Memorial Bridge upstream. Around 100,000 vehicles cross daily, making it the second most heavily used bridge on the Mississippi after the I-94 crossing in Minneapolis.
  What is the worst road in St. Louis?,The Poplar Street Bridge is the most consequential — three interstate routes on a single deck, with limited alternatives. For day-to-day commuting delay, I-64 through the central corridor and the eastern arc of I-270 are the most consistent.
  Is St. Louis traffic actually bad?,Not by national standards. St. Louis sits below the 49-hour US average for hours lost to congestion per driver, and most days are easy. What it has is concentration: a handful of crossings and connectors carrying a disproportionate share, so the difference between a good commute and a bad one here is less about the hour and more about whether your route touches one of them.
  How do I find the best time to leave for my St. Louis commute?,Use a leave-time commute app that reads your actual route rather than only a live map. BoardSpy recommends when to leave for your St. Louis route, sends pre-departure traffic and weather alerts, and tracks on-time performance and your best and worst traffic days. Download it here.
citations[1]{name,url}:
  Poplar Street Bridge (Wikipedia),https://en.wikipedia.org/wiki/Poplar_Street_Bridge
internal_links[7]{label,url}:
  best time to leave calculator,https://boardspy.site/tools/when-to-leave/
  the worst day of the week varies by city too,https://boardspy.site/blog/how-much-time-traffic-adds-to-commute/
  the best time to leave Chicago,https://boardspy.site/blog/best-time-to-leave-chicago-avoid-traffic/
  it checks your saved St. Louis route before you leave,https://boardspy.site/apps/
  best app to avoid traffic,https://boardspy.site/compare/best-app-to-avoid-traffic/
  Google Maps commute alternatives,https://boardspy.site/compare/google-maps-commute-alternative-app/
  the best time to drive through St. Louis,https://boardspy.site/blog/best-time-to-drive-through-st-louis/