Source: US DOT.Average Hourly Traffic on George Washington Bridge,
The George Washington bridge, linking Manhattan to New
Jersey, is one of the most heavily used bridge in the world,
with a daily traffic of over 300,000 vehicles. Completed in
1931, a second level containing 6 lanes was added in 1962,
making George Washington the world's only 14 lanes suspension
bridge. The bridge is facing two major types of congestion
There is thus an overlap of local and regional traffic
flows, stressing the physical capacity of the bridge to its limits.
In addition, the eastbound access to the bridge is subject to toll,
which creates a significant backlog and delays; the users are forced
to assume both the monetary (toll) and time (delays) costs of
toll collection. To mitigate the situation,
an electronic toll system was established with reserved toll lanes.
- First, it supports commuting flows between Manhattan
and the New Jersey suburbs. This pattern is clearly shown on the above
figure where eastbound flows (New Jersey to Manhattan) are more prevalent
in the morning, while westbound flows (Manhattan to New Jersey) are
more prevalent in the afternoon and the evening.
- Second, the bridge
is one of the crucial links along the Boston - Washington corridor (Interstate
I-95), which imposes a substantial amount of truck traffic (above 23,000
trucks per day).