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Blue Water Bridge

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Blue Water Bridge
Blue Water Bridge, newer bridge in foreground
Carries	6 lanes of I-69/I-94 and Highway 402 (westbound span, 3 lanes; eastbound span, 3 lanes)
Crosses	St. Clair River
Locale	Port Huron, Michigan and Point Edward, Ontario
Maintained by	MDOT and Blue Water Bridge Authority
Design	Cantilever truss (westbound) Continuous tied arch (eastbound)
Longest span	871 feet (265 m) (westbound) 922 feet (281 m) (eastbound)
Total length	6,178 feet (1,883 m) (westbound) 6,109 feet (1,862 m) (eastbound)
Width	38 feet (12 m) (westbound) 51 feet (16 m) (eastbound)
Height	210 feet (64 m) (westbound) 233 feet (71 m) (eastbound)
Clearance below	152 feet (46 m) (westbound) 155 feet (47 m) (eastbound)
AADT	14,000
Opening date	October 10, 1938 (westbound) July 22, 1997 (eastbound)
Toll	Cars: USD$2.25 (westbound) or CAD$2.50 (westbound) USD$1.75 (eastbound) or CAD$2.00 (eastbound)
Maps and aerial photos

The Blue Water Bridge is a twin-span bridge that spans the St. Clair River between Port Huron, Michigan and Point Edward, Ontario (near Sarnia, Ontario). The Blue Water Bridge connects with Highway 402 in Ontario and with both Interstate 69 and Interstate 94 in Michigan. The original span is a cantilever truss bridge and the second span is a continuous tied arch bridge. The first bridge was opened to traffic on October 10, 1938. The lead engineer was Ralph Modjeski. This bridge originally had two lanes for vehicles as well as sidewalks, which were removed in the 1980s to make room for a third lane for automobiles. The third lane for each direction starts from the apex of the bridge in order to accommodate long lineups entering each sides' respective border crossings. A second three-lane bridge, just south of the first bridge, opened on July 22, 1997. As a precursor to this project, the customs and toll collection booths on booth sides were extensively reconfigured (in Canada, the original booths in use since 1938 were demolished). The first bridge was immediately closed afterwards for renovation and reopened in 1999; the newer bridge used a similar 3-lane configuration for a couple years. A flyover ramp on the US side temporarily diverted westbound traffic from the new bridge to the toll plaza, which was blocked off after the original bridge was rehabilitated. The first bridge is a cantilever truss with a total length of 6,178 feet (1,883 m). The main span is 871 feet (265 m). The second bridge is a continuous tied arch with a total length of 6,109 feet (1,862 m). The main span is 922 feet (281 m). The twinning project was a combined effort between Modjeski & Masters - U.S Engineers and Buckland & Taylor Ltd. - Canadian Engineers. During the debate over five possible designs 1994-95, over half of public opinion had mostly favored a duplicate of the first bridge, while the cable-stayed bridge came in second with around 21%. The Blue Water Bridge Authority had rejected both designs, due to the duplicate creating a false sense of history, while the cable-stayed option was feared to overshadow the existing bridge. The continuous-tied arch design, which was a distant third place in polls, was chosen for two reasons. One was that it blends in with the original span yet stands out on its own, and the other is lower maintenance costs because fewer spans are involved. Together, the bridges are one of the busiest transportation arteries between the United States and Canada. They also provide one of the four shortest routes of land travel between the eastern seaboard of the United States, and the central United States. The Blue Water Bridges are jointly owned and maintained by Canada and the United States. The Blue Water Bridge Authority is in charge of the Canadian side, and the Michigan Department of Transportation (MDOT) is in charge of the U.S. side. The bridges charge a toll, which is used to pay for bridge maintenance and operations. The Blue Water Bridge was featured in the 2000 Kim Basinger movie Bless the Child, where it represented a New York City bridge. It is also featured in the 1994 Danny DeVito movie Renaissance Man directed by Penny Marshall.