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Open data · updated July 6, 2026

Cape Cod Traffic Statistics

Every number below is computed from 44,316 measured drive-time readings collected since May 2026, logged every 15 minutes during Cape Cod travel windows via the Google Routes API — not estimates, not survey data. Figures show the drive from Boston; the live dashboard covers eight more origins. Cite freely with a link (CC BY 4.0); download the raw CSV.

Boston → Sagamore Bridge · Heading down · July

The worst measured window is Thursday around 2 PM, averaging 117 minutes (up to 130 on busy days). The calmest is Saturday around 6 AM at ~53 minutes.

Typical drive time in minutes, Boston → Sagamore Bridge, by day and hour (July)
HourThursdayFridaySaturday
6 AM60–61 min57–62 min53–54 min
7 AM60–61 min60–68 min55–56 min
8 AM60–61 min64–77 min58–59 min
9 AM64–68 min63–73 min63–68 min
10 AM–94–117 min74–83 min
11 AM–100–125 min77–87 min
12 PM75 min106–130 min77–86 min
1 PM101–126 min105–124 min76–84 min
2 PM117–130 min107–132 min73–82 min
3 PM117–127 min100–127 min–
4 PM110–120 min91–113 min–
5 PM99–108 min77–93 min–
6 PM80–88 min65–72 min–
7 PM72–81 min60–64 min–
8 PM70–80 min60–65 min–
9 PM65–73 min58 min–

Ranges are typical–busy (mean to modeled 90th percentile). “–” = outside tracked travel windows.

Sagamore Bridge → Boston · Heading home · July

The worst measured window is Sunday around 1 PM, averaging 91 minutes (up to 100 on busy days). The calmest is Sunday around 9 PM at ~66 minutes.

Typical drive time in minutes, Sagamore Bridge → Boston, by day and hour (July)
HourSundayMonday
6 AM–90–96 min
7 AM–91–97 min
8 AM–80–86 min
9 AM–71–73 min
10 AM–69–72 min
11 AM89–98 min67–73 min
12 PM90–96 min71–80 min
1 PM91–100 min–
2 PM86–94 min–
3 PM83–91 min–
4 PM82–90 min–
5 PM78–87 min–
6 PM72–80 min–
7 PM68–78 min–
8 PM69–80 min–
9 PM66–76 min–

Ranges are typical–busy (mean to modeled 90th percentile). “–” = outside tracked travel windows.

Boston → Bourne Bridge · Heading down · July

The worst measured window is Thursday around 3 PM, averaging 122 minutes (up to 133 on busy days). The calmest is Saturday around 6 AM at ~58 minutes.

Typical drive time in minutes, Boston → Bourne Bridge, by day and hour (July)
HourThursdayFridaySaturday
6 AM68–72 min62–66 min58 min
7 AM68–72 min62–66 min60–61 min
8 AM68–72 min62–66 min62–63 min
9 AM68–72 min62–66 min65–68 min
10 AM–97–120 min73–78 min
11 AM–101–128 min77–84 min
12 PM77 min105–128 min77–84 min
1 PM102–129 min106–121 min77–84 min
2 PM121–133 min111–137 min77–84 min
3 PM122–133 min105–132 min–
4 PM115–121 min96–117 min–
5 PM104–111 min83–98 min–
6 PM85–92 min69–77 min–
7 PM76–84 min65–68 min–
8 PM73–81 min65–69 min–
9 PM68–74 min62–63 min–

Ranges are typical–busy (mean to modeled 90th percentile). “–” = outside tracked travel windows.

Bourne Bridge → Boston · Heading home · July

The worst measured window is Monday around 7 AM, averaging 97 minutes (up to 103 on busy days). The calmest is Sunday around 9 PM at ~68 minutes.

Typical drive time in minutes, Bourne Bridge → Boston, by day and hour (July)
HourSundayMonday
6 AM–96–102 min
7 AM–97–103 min
8 AM–85–91 min
9 AM–74–77 min
10 AM–71–72 min
11 AM84–91 min69–71 min
12 PM91–101 min73–78 min
1 PM89–96 min–
2 PM87–95 min–
3 PM84–92 min–
4 PM80–87 min–
5 PM77–83 min–
6 PM72–77 min–
7 PM69–76 min–
8 PM70–76 min–
9 PM68–73 min–

Ranges are typical–busy (mean to modeled 90th percentile). “–” = outside tracked travel windows.

Boston → Hyannis · Heading down · July

The worst measured window is Thursday around 2 PM, averaging 138 minutes (up to 150 on busy days). The calmest is Saturday around 6 AM at ~71 minutes.

Typical drive time in minutes, Boston → Hyannis, by day and hour (July)
HourThursdayFridaySaturday
6 AM81–89 min78–84 min71–72 min
7 AM93–96 min86–98 min73–75 min
8 AM92–95 min95–99 min76–78 min
9 AM90–95 min92–94 min83–88 min
10 AM–116–140 min95–104 min
11 AM–120–146 min98–108 min
12 PM95 min127–150 min98–107 min
1 PM123–147 min127–144 min96–104 min
2 PM138–150 min129–152 min93–102 min
3 PM138–147 min122–149 min–
4 PM131–140 min111–133 min–
5 PM119–127 min97–112 min–
6 PM100–108 min84–92 min–
7 PM92–101 min79–83 min–
8 PM89–100 min79–83 min–
9 PM84–93 min76–77 min–

Ranges are typical–busy (mean to modeled 90th percentile). “–” = outside tracked travel windows.

Hyannis → Boston · Heading home · July

The worst measured window is Sunday around 11 AM, averaging 130 minutes (up to 147 on busy days). The calmest is Sunday around 9 PM at ~88 minutes.

Typical drive time in minutes, Hyannis → Boston, by day and hour (July)
HourSundayMonday
6 AM–114–119 min
7 AM–110–115 min
8 AM–98–103 min
9 AM–92–96 min
10 AM–93–102 min
11 AM130–147 min91–101 min
12 PM128–145 min98–113 min
1 PM125–145 min–
2 PM118–142 min–
3 PM112–130 min–
4 PM107–122 min–
5 PM99–111 min–
6 PM92–103 min–
7 PM90–104 min–
8 PM92–107 min–
9 PM88–101 min–

Ranges are typical–busy (mean to modeled 90th percentile). “–” = outside tracked travel windows.

Methodology

A collection job queries the Google Routes API every 15 minutes during Cape Cod travel windows (Thursday–Saturday heading toward the Cape, Sunday–Monday heading home), recording the with-traffic drive time, the free-flow baseline, and a timestamp for each origin–destination pair. Bridge destinations are measured to the mainland approach of each bridge, so the figures isolate the crossing’s backup rather than on-Cape local traffic.

“Typical” figures average the most recent same-weekday readings (recent weeks lead; the seasonal record fills sparse hours). “Busy day” figures are a modeled 90th percentile from the observed spread. Readings more than 3× the free-flow time are flagged as routing outliers and excluded. Hours outside the travel windows aren’t collected and are never estimated.

The dataset starts May 2026 and grows by roughly a thousand readings per week in season. Raw readings (CSV) · license CC BY 4.0 — cite “Cape Cod Traffic (cape-cod-traffic.com)”.

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