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Interstate 675 (Michigan)

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Interstate 675 marker

Interstate 675
290x172px
I-675 highlighted in red
Route information
Auxiliary route of I-75
Maintained by MDOT
Length: 7.728 mi[3] (12.437 km)
Existed: 1971[1][2] – present
Major junctions
South end: I-75 / US 23 near Saginaw
  M-58 in Saginaw
North end: I-75 / US 23 in Zilwaukee
Location
Counties: Saginaw
Highway system
← M-553 I-696 →

Interstate 675 (I-675) is an auxiliary Interstate Highway in the US state of Michigan. The freeway is a 7.73-mile-long (12.44 km) loop route through downtown Saginaw as I-75 passes on the east side of the city. I-675 is also a state trunkline highway that provided a bypass of the former drawbridge carrying I-75 and US Highway 23 (US 23) across the Saginaw River. Construction of I-675 started in 1969 and the freeway opened in 1971. Since then, sections near downtown were reconstructed in 2009 through 2011 to update one of the freeway's interchanges and rebuild the bridge over the Saginaw River.

Route description

I-675 splits from I-75 on the eastern side of Saginaw, turning west toward downtown. The freeway runs between residential neighborhoods and has an interchange with Veterans Memorial Parkway. West of that interchange,[4][5] it crosses a line of the Huron and Eastern Railway.[6] From there, it runs on the northern edge of downtown near the Dow Event Center, crossing the Saginaw River on the Henry G. Marsh Bridge. On the west side of the river, the trunkline meets an interchange with M-58. From there it turns northward,[4][5] crossing a line of the Mid-Michigan Railroad.[6] I-675 continues northward, passing to the east of the Aleda E. Lutz VA Medical Center and through more residential neighborhoods in Saginaw Township North. After the interchange with Tittabawassee Road, which provides access to the Fashion Square Mall, I-675 turns northeasterly to merge back to I-75 north of the Zilwaukee Bridge.[4][5]

Like other state highways in Michigan, I-675 is maintained by the Michigan Department of Transportation (MDOT). In 2011, the department's traffic surveys showed that on average, 20,900 vehicles used the freeway daily across the river and 4,000 vehicles did so each day north of Tittabawassee Road, the highest and lowest counts along the trunkline, respectively.[7] As an Interstate Highway, all of I-675 is listed on the National Highway System,[8] a network of roads important to the country's economy, defense, and mobility.[9]

History

File:Saginaw, Michigan 1955 Yellow Book.jpg
1957 planning map for the Interstates in Saginaw

Initially planned in the mid-1950s, the I-675 freeway was under construction starting in 1969.[10][11] The freeway was completed in 1971 and opened to traffic that year.[1][2][12]

For nearly a decade (1979–88), I-675 served as an alternate route for traffic during construction of a new bridge across the Saginaw River for I-75/US 23 at Zilwaukee. The original span, built in 1960, was designed as a bascule bridge which could be raised to allow shipping traffic to use the river. Opening the drawbridge would back traffic up on the freeway for upwards of four hours on holiday weekends. I-675 helped relieve the congestion during such times,[13] including during the major construction accident in August 1982 that delayed completion of the new bridge. Originally to be completed in 1983, it finally opened on September 19, 1988.[14]

Starting in May 2009 and ending in November 2011, sections of I-675 were closed from exit 2 easterly to begin renovations during the summer construction seasons. These projects included rehabilitation of the Henry Marsh Bridge, the reconstruction of overpasses, and a redesigned exit at Warren Avenue to ease access into downtown Saginaw.[15][16]

Exit list

The entire highway is in Saginaw County.

Location mi[3] km Exit Destinations Notes
Buena Vista Township 0.000 0.000 — I-75 / US 23 – Flint, Mackinac Bridge Exit 150 on I-75/US 23
Saginaw 1.110–
1.124		 1.786–
1.809		 1 Veterans Memorial Parkway
1.844–
1.897		 2.968–
3.053		 2A 5th Avenue, 6th Avenue Northbound exit and southbound entrance
2.333 3.755 2B To M-13 / Warren Avenue, Jefferson Avenue – Downtown Saginaw Signed as exit 2 southbound; Warren Avenue signed northbound only, Jefferson Avenue signed southbound only
2.896–
3.237		 4.661–
5.209		 3 M-58 (Davenport Avenue) / Michigan Avenue Southbound exit via Hill Street; eastern terminus of M-58
Saginaw Township 5.854 9.421 6 Tittabawassee Road – Zilwaukee
Zilwaukee Township 7.728 12.437 — I-75 / US 23 – Flint, Mackinac Bridge Exit 155 on I-75/US 23
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

See also

References

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  6. ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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  14. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  15. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  16. ↑ Lua error in package.lua at line 80: module 'strict' not found.

External links

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