Share of the Chicago, Saint Paul, Minneapolis and Omaha Railway Company, issued 13. December 1919 | |
| Overview | |
|---|---|
| Headquarters | St. Paul, Minnesota |
| Reporting mark | CMO, CSt.PM&O |
| Locale | United States from St. Paul, Minnesota, Elroy, Wisconsin; Sioux City, Iowa |
| Dates of operation | 1880–1972 |
| Predecessor | West Wisconsin Railway, St. Paul and Sioux City Railway |
| Successor | Chicago and North Western Railway,Union Pacific Railroad |
| Technical | |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) |
| Length | 1,616 miles (2,601 km) |
TheChicago, St. Paul, Minneapolis and Omaha Railway orOmaha Road (reporting markCMO) was arailroad in theU.S. states ofNebraska,Iowa,Minnesota,Wisconsin, andSouth Dakota. It was incorporated in 1880 as a consolidation of theChicago, St. Paul and Minneapolis Railway and theNorth Wisconsin Railway.[1] TheChicago and North Western Railway (C&NW) gained control in 1882.[2] The C&NW leased the Omaha Road in 1957[3] and merged the company into itself in 1972.[4]
Today, portions of the C. St. P. M. and O. are part of theUnion Pacific Railroad network, including main lines fromWyeville, Wisconsin, toSt. Paul, Minnesota, and St. Paul toSioux City, Iowa.

TheWest Wisconsin Railway was authorized in 1876 to build from St. Paul to the Chicago and North Western Railway atElroy, Wisconsin.[5] It went bankrupt and was acquired in 1878 by theChicago, St. Paul, and Minneapolis Railway.[5][6] Its main line from the junction with theGreat Northern Railway at St. Paul to Elroy, along with branches from it, became known as the C. St. P. M.'s Eastern Division.[7]
The Land Grant Act of Congress approved March 3, 1857, when Minnesota was still aTerritory and not a state, conferred on the then calledSouthern Minnesota Railroad Company "lands, interests, rights, powers and privileges" for the proposed line of railroad from St. Paul viaMankato, Minnesota, and other points named to the southern boundary of the state in the direction of the mouth of theBig Sioux river. TheMinnesota Valley Railroad Company was organized in 1864 under an act of the Minnesota Legislature approved March 4, 1864. This granted to the new company the Southern Minnesota Railroad grant.[8]

In 1869, the Minnesota Valley Railroad and Minnesota Central Railroad Company built a bridge across the Mississippi between Mendota and St. Paul atPickerel Lake. It was the predecessor of today'sOmaha Road Bridge Number 15. A freight house was constructed in St. Paul at the foot of Robert Street. The name of the company changed on April 7, 1869, to theSt. Paul and Sioux City Railroad. The railroad had reached Mankato at the bend of the Minnesota river, and left the river valley to reachLake Crystal, Minnesota.[8] By September 1872, the track was completed toLe Mars, Iowa, where it joined theIowa Falls and Sioux City railroad, a predecessor of theIllinois Central Railroad.[9] On October 1, 1872, the railroad was in regular operation from St. Paul through to Sioux City. This main line from Mendota to Le Mars became the St. Paul and Sioux City division, and eventually the Western Division.[7]
TheNorth Wisconsin Railway was merged along withChicago, St. Paul and Minneapolis Railway to become the Chicago, St. Paul, Minneapolis and Omaha Railway in 1880.[10][6][11] The C. St. P. M. & O. then purchased the St. Paul and Sioux City in 1881.[6] The route was a bow shape between Le Mars to the Twin Cities to Elroy, Wisconsin. The railroad connected the Eastern and Western divisions through trackage leases on the Minneapolis and St. Louis at Merriam Junction to Minneapolis, the Great Northern between Minneapolis and St. Paul, and theMilwaukee Road between Mendota and St. Paul.[7]
On Jan. 1, 1881,William Truesdale was appointed the railroad's traffic manager; he would later become the line's vice-president, and still later president of theDelaware, Lackawanna, and Western Railroad and an industry leader.[12]
The Omaha would go on to acquire the Menomonie Railway, the Sault Ste Marie and Southwestern Railway, the Superior Short Line Railway, the Watonwan Valley Railway, the Des Moines Valley Railway, the Chippewa Valley and Northwestern Railway, and Eau Claire, Chippewa Falls, and Northeastern Railway.[13]
In November 1883, control passed to the Chicago and North Western Railway Company.[13] At the end of 1956, C. St. P. M. & O. operated 1,616 miles of road and 2396 miles of track; that year, it reported 2,115 million ton-miles of revenue freight and 65 million passenger-miles.
Although the CMO had long been absorbed by the C&NW before that railroad was purchased by the Union Pacific, the UP still uses theCMOreporting mark on cars.[14]
ThePikes Creek Tragedy was a derailment that occurred on October 2, 1884, on the Bayfield branch roughly midway between the towns of Bayfield and Washburn, Wisconsin costing the lives of 10 men and injuring several others.

The following main lines were part of the Omaha Road:[15]
| Division | Status |
|---|---|
| Eastern Division:Elroy, Wisconsin (junction with C&NW towardsChicago) toMinneapolis-St. Paul, Minnesota | Mostly part of theUnion Pacific Railroad'sWyeville andAltoona Subdivisions |
| Northern Division:Northline (junction with Eastern Division towards Minneapolis-St. Paul) toBayfield, Wisconsin | Abandoned |
| Eau Claire (Eastern Division) toSpooner, Wisconsin (Northern Division main line) | Abandoned between Spooner andRice Lake, Wisconsin.Progressive Rail owns the line fromCameron, Wisconsin, south toChippewa Falls, Wisconsin. Between Spooner andTrego, Wisconsin, is used by theWisconsin Great Northern Railroad. Canadian National owns the line between Rice Lake and Cameron. |
| Trego, Wisconsin (Northern Division main line) toGordon, Wisconsin | Abandoned, known as the Wild Rivers Trail |
| Gordon, Wisconsin (Northern Division main line) toSuperior, Wisconsin | Part of Canadian National's line to Chicago. CN connects at the Itasca yard and follows the Omaha right-of-way to Gordon where it then connects to former Soo Line tracks heading South East |
| St. Paul and Sioux City Division: Minneapolis-St. Paul toSioux City, Iowa | The Union Pacific Railroad'sMankato andWorthington Subdivisions |
| Org, Minnesota (SP&SC Division main line) toMitchell, South Dakota | Became theMinnesota Southern Railway east ofManley and now belongs toEllis and Eastern Company. The railroad has received funding to rebuild the line from Org, Minnesota, to Sioux Falls[1]. |
| Nebraska Division: Sioux City toOmaha, Nebraska | Abandoned |
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