Interstate 55, MissouriRoads of the Mid-South & West > Highways of the State of Missouri > Interstate 55, Missouri

Interstate 55

Interstate 55 is the main north-south artery to the far southeastern foot hills of Missouri. It parellels the Mississippi River throughout Missouri.

While in Missouri, I-55 is multi-plexed several times.

I-55 is multi-plexed with...

...Interstate 64, from the Illinois/Missouri State Line, west for less than a 1/4 mile.
...U.S. Rt. 40, from the Illinois/Missouri State Line, west for less than a 1/4 mile.

...Interstate 44, at St. Louis.
...Missouri State Route 74, at Cape Girardeau.

...U.S. Rt. 61, from Cape Girardeau to near Scott City.

...U.S. Rt. 61, from near Portageville to near Steele.


In December, 2015 into January, 2016, Interstate 44 and 55 were closed to all traffic in each direction near St. Louis. This was dues to flooding of the highway. Many local roads were shut down as well. These are pictures of a variable message board on SB Interstate 57, near Manteno, Illinois.

A VMS on SB I-57, near Manteno, IL. (January, 2016)

A VMS on SB I-57, near Manteno, IL. (January, 2016)

A VMS on SB I-57, near Manteno, IL. (January, 2016)

In Missouri, I-55 intersects the following interstates.

Interstate 44, in Downtown St. Louis.
Interstate 64, in Downtown St. Louis.

SB I-55; WB I-64/70; U.S. Rt. 40 near their split in Downtown St. Louis.

SB I-55; WB I-64/70; U.S. Rt. 40 at WB I-70.

NB I-55 near I-64/70.

Another BGS on NB I-55.

NB I-55 at I-64/70.

NB I-55 near I-64/70. (May, 2012)

Another set of BGS's on NB I-55. (May, 2012)

NB I-55 at I-64/70. (May, 2012)

Lane markers prior to the interchange with I-55/64. (July, 2014)

EB I-44 near I-55/64. (July, 2014)

EB I-44 at I-55/64. (July, 2014).
Interstate 44, at St. Louis.

The first BGS for I-44 on NB I-55.

NB I-55 near I-44.

NB I-55 at I-44.

NB I-55 a half mile from I-44. (May, 2012)

NB I-55 near I-44. (May, 2012)

NB I-55 at I-44. (May, 2012)

NB I-55 two miles from I-44. (July, 2016)

NB I-55 under one mile from I-44. (July, 2016)

NB I-55 before I-44. (July, 2016)

NB I-55 at I-44. (July, 2016)

SB I-55 less than a mile from I-44.

SB I-55 near I-44.

SB I-55 at i-44.
Interstate 270, near Webster Grove.
Interstate 255, near Webster Grove.

SB I-55 two miles from I-255/270.

A BGS on SB I-55.

SB I-55 near I-255/270.

A set of lane markers on SB I-55.

SB I-55 at I-255/270.

A mileage sign on NB I-55.

A BGS on NB I-55 1 1/2 miles from I-255/270.

A set of overhead BGS's on NB I-55.

Another set of overhead BGS's on NB I-55.

NB I-55 at I-255/270.

Interstate 57, near Sikeston.

BGS on SB I-55.

SB I-55 at I-57.

A BGS on SB I-55 at the ramp to NB I-57.

Interstate 155, near Hayti.

Overhead sign on SB I-55.

BGS on SB I-55.

SB I-55 near the interchange with I-155.

SB I-55 at I-55.

Branches of I-55 in Missouri.



SB I-55; WB I-64/70; U.S. Rt. 40 at the St. Louis City Limits on the PSB.

The Missouri Welcome Sign on the PSB.

The Missouri Welcome sign on the Poplar Street Bridge-SB I-55; WB I-64/70 U.S. Rt. 40. (September, 2010)

SB I-55; WB I-64/70; U.S. Rt. 40 at the westend of the PSB.

Looking east along the Poplar Street Bridge from the Missouri side.

Looking north at the Poplar Street Bridge from the Mac Arthur Bridge.

Looking east at the Poplar Street Bridge complex from a overlook at Busch Stadium. (August, 2006)

A guide marker in Downtown St. Louis.

A guide marker north of Downtown St. Louis.

Looking north at I-55 from the Union Pacific railroad leading to the Mac Arthur Bridge.

A speed warning sign on NB I-55.

NB I-55 near Lombard in St. Louis.

EB I-44/NB I-55 at Park Ave in St. Louis.

SB I-55 at Truman Parkway.

NB I-55 near Russell in St. Louis.

NB I-55 near Arsenal.

NB I-55 near Meramec.

NB I-55 near California in St. Louis.

NB I-55 near St. Georige.

NB I-55 near Green Park.

A BGS for I-55/255/270 on a ramp from U.S. Rt. 50/61/67.

NB I-55 at I-255/270.

A guide marker on SB MO St Rt 141.

A BGS on SB MO St Rt 141.

A guide marker on NB U.S. Rt. 61/67.

NB I-55 near Barnhart.

SB I-55 near Herculaneum.

A BGS for NB I-55 on MO Sec St Rt A.

A BGS on SB I-55 on MO Sec St Rt A.

SB I-55 near Festus.

A BGS on SB BUSN Loop I-55/U.S. Rt. 61-67.

NB I-55 at Crystal City.

NB I-55 in Southern Jefferson County.

NB I-55 in Northern Ste. Genevieve County.

NB I-55 near Bloomsdale.

NB I-55 north of MO St Rt 32.

SB I-55 at MO 32. Photo from the MO St Rt 32 overpass.

A mile post on NB I-55.

NB I-55 north of MO Sec St Rt N/J/M.

NB I-55 at the Perry/Ste. Genevieve County Line.

NB I-55 north of MO Sec St Rt M.

NB I-55 north of MO St Rt 51.

SB I-55 near Perryville.

BGS on EB MO Sec St Rt K at Cape Girardeau.

SB I-55 near Sikeston.

A Missouri oddity. Normally Missouri places the state name on interstate shield. Signs on EB U.S. Rt. 62 in Miner.

A guide marker on EB U.S. Rt. 60.

A BGS on EB U.S. Rt. 60.

Milage sign on SB I-55, near Miner.

BGS on SB BUSN Loop I-55/U.S. Rt. 61/WB U.S. Rt. 62 north of New Madrd.

SB I-55 in Northern Pemiscot County.

21 December 2016