In June 1917, the office of the State Highway Department was moved to the basement of the east wing of the State Capitol Building after the building was completed.
On June 1, 1919, Henry Wood became the fourth Highway Commissioner.
On June 1, 1925, Senate Bill 44 was approved appointing a Right-of-Way Engineer to secure right-of-way and exercise eminent domain for the State Highway Department.
On June 1, 1925, SH-29 was designated from SH-8 in Lawton east to SH 4 in Ardmore.
On June 1, 1927, SH-51 was designated from the SH-17 in Stilwell west to SH-27 west of Eldon.
On June 1, 1927, Clark R. Mandigo became the tenth Chief Engineer of the Highway Department
On June 1, 1936, the first inventory of all roads in Cherokee, Greer, Noble and Pawnee Counties was completed.
On June 1, 1967, William M. Dane was appointed as the 5th Director of the Highway Department.
On June 1, 1970, SH-70 was designated as a truck route in Idabel from US-70 south and east to SH-3 & US-70 (South Bypass Route).
On June 2, 1936, the first inventory of all roads in McIntosh County was completed in preparation for the first McIntosh County Highway and Transportation Map
On June 2, 1937,SH-73 was designated from US-66 west of Elk City to US-235.
On June 2, 1975, a ceremony was held on I-40 near Erick marking the completion of the final 17 miles of the 616 mile-long rural interstate highway system in Oklahoma.
On June 3, 1944, SH-62 was designated from US-183 east to the County Court House in Arapaho.
On June 3, 2002, the Transportation Commission declared an emergency following the I-40 Webbers Falls bridge hit and approved a contract for demolition of the bridge.
On June 4, 1925, the contract to construct the first bridge over the Red River was awarded. The bridge was known as the Hugo - Paris bridge.
On June 4, 1934, SH 59 was designated from SH-18 near Pearson to SH-48 south of Seminole.
On June 4, 1990, the Transportation Commission elected Jack L. Blaess as the 4th Director of Oklahoma Department of Transportation.
On June 4, 2001, the Transportation Commission voted to allow the Department to issue bonds as part of the GARVEE Bond program, the first time the Department financed road construction by selling bonds.
On June 5, 1967, the US-70 & 271 Hugo Bypass project and a I-35 road and bridge project in Garvin and McClain Counties were awarded.
On June 5, 1971, President Richard Nixon was on hand to dedicate the McClellan-Kerr Arkansas River Navigation System.
On June 5,1989 the Roadside Beautification Donor Fund was established and was to be administered and implemented by the ODOT Beautification Office.
On June 6, 1969, the Highway Commission approved the hiring of Truman Branscum as the 6th Director for the State Highway Department.
On June 7, 1948, the Highway Commission approved Clarksville, Texas and Idabel, Oklahoma as the site for a bridge over the Red River.
On June 7, 1971, the Highway Director Brooks reported that the Department received an additional $10.2 million in Federal funds because of staff diligence in getting projects ready for submission to the Federal Highway Administration.
On June 7, 1971, Gov. Hall announced that there was an immediate necessity to expand access to Will Rogers International Airport in Oklahoma City via I-240 and I-40.
On June 8, 1976, House Bill 1791 was approved creating the Department of Transportation and abolishing the Department of Highways. It also renamed the Highway Commission to the Transportation Commission.
On June 9, 1919, a Federal and State experimental road project on East 23rd Street Highway near Santa Fe was completed. It was one of the first paved highway in the state.
On June 10, 1911, Gov. Lee Cruce appointed Sidney Suggs as the new and first State Highway Commissioner.
On June 10, 1936, the first inventory of all roads in Creek County was completed.
On June 10, 1936, the second U.S. Work Program project for the Oklahoma Department of Highways to be awarded. A SH-33 overpass over a county road and Missouri Pacific Railroad.
On June 10, 1937, a contract for the Lexington-Purcell Bridge over the Canadian River was awarded.
On June 11, 1936, the first inventory of all roads in Hughes, LeFlore and Sequoyah Counties was completed.
On June 11, 1957, a contract to construct a section of US-77 in Kay County from the Kansas State Line south miles was awarded.
On June 12, 2002, the Transportation Commission award a contract to rebuild the I-40 bridge over the Arkansas River near Webbers Falls following a bridge hit.
On June 13, 1958, the Highway Commission approved the construction of the I-40 Tinker Diagonal which was the part of Interstate that run along Tinker Air Force Base.
On June 14, 1999, Amtrak train service returned to Oklahoma with the inaugural trip of the Heartland Flyer, running daily from Oklahoma City to Ft. Worth, TX.
On June 14, 2010, Heavy rain closed parts of SH-132 in Garfield Co., US-177 in Kay Co., US-177 and SH-18 in Lincoln Co., I-40 in Oklahoma Co. and SH-20 in Tulsa Co..
On June 15, 1911, House Bill 318 became effective establishing the Oklahoma Department of Highways and providing for a State Highway Commissioner
On June 15, 1927, a convict labor camp was built near Stringtown in Atoka County to provide workers to construct and build bridges along 24 miles of US-73 in the area.
On June 15, 1936, the first inventory of all roads in Osage County was completed in preparation for the first Osage County - General Highway and Transportation Map
On June 16, 1936, Congress amended the Federal Aid Highway Act of 1916 authorizing Federal funds to be applied to secondary or feeder roads thus creating the Federal Aid Secondary Road System.
On June 16, 1942, the Commission approved the designation of SH-94 from Hardesty to Hooker.
On June 17, 1980, the I-44 Belle Isle Bridge opened for traffic in Oklahoma City.
On June 17, 1980, House Bill 1819 was approved creating a County Roads Branch within the Department of Transportation.
On June 18, 1936, the first inventory of all roads in Muskogee County was completed and work began on to prepared the first Muskogee County highway map.
On June 19, 1944, the War Production Board authorized the use of new steel to reconstruct the SH-33 bridge over the Grand River, after the old bridge was washed out in floods a year earlier.
On June 20, 1944, the Highway Commission approved the designation of SH-55A from SH-55 north to SH-41.
On June 20, 1970, the project to surface I-40 (Clinton Bypass) from Clinton and east 4 miles was completed.
On June 21, 1932, the first two projects on the proposed US-270 Northwest Highway were sent out for bids. Both projects were in Harper County.
On June 21, 1945, Gov. Kerr dedicated the Roosevelt Bridge on US-70 over Lake Texhoma. It was named in memory of President Roosevelt.
On June 22, 1929, House Bill 4 was approved authorizing the Department to purchase or enter into condemnation proceedings on any toll bridge or road needed as part of the state highway system.
On June 22, 1929, House Bill 241 was approved raising the gasoline tax to four cents per gallon. One cent would go to Counties and 3 cents would go to the State.
On June 22, 1948, the Highway Commission approved the widening and reconstruction of US-66 in Tulsa from the southerly city limits to 25th Street.
On June 23, 1948, the Highway Commission instructed the Director to revise the current engineering contract for a future 4-lane freeway between Sapulpa and Tulsa.
On June 23, 1953, the Highway Commission awarded a contract for the US-66 Bypass project at NW 39th St. and Drexel Ave. in Oklahoma City.
On June 24, 1947, the Highway Commission adopted a resolution designating a route consisting of several highways between Miami and Altus as the “Broadway to the Big Bend Highway.”
On June 25, 1936, the first inventory of all roads in Rogers and Tillman Counties was completed.
On June 25, 1992, Gov. David Walters dedicated the Lake Hefner Parkway (SH 74) in Oklahoma City.
On June 26, 2001, Gov. Keating appointed Herschal Crow as the 4th Secretary of Transportation.
On June 27, 1958, Gov. Raymond Gary dedicated the new 6- lane Lincoln Boulevard and interchange at US-66 (now I-44) north of the State Capitol in Oklahoma City.
On June 27, 1985, the Executive Committee of the American Association of State Highway and Transportation Officials approved elimination of US-66 designation in Oklahoma.
On June 28, 1938, construction on US-270 began as part of the Northwest Passage from US-81 near Okarche in Canadian Co. and extending southeast 18 miles to the Oklahoma Co. Line.
On June 28, 1965, House Bill 654 was approved requiring junk and salvage yards be at least fifty feet away from highway right-of-way and be screened from view from any adjacent road or highway,
On June 29, 1918, separate contracts were awarded for the 3rd and 4th official projects by the Oklahoma Highway Department.
On June 29, 1936, the first inventory of all roads in Grant and Latimer Counties was complete and work started on preparing the first official state road maps.
On June 29, 1956, President Dwight D. Eisenhower signed the Federal Aid Highway Act of 1956 which set aside funding for an interstate system.
On June 29, 1992, the Lake Hefner Parkway (SH 74) was first opened to traffic.
On June 30, 1925, the last day of the federal fiscal year, the annual income of the Oklahoma State Highway Department was $3,092,982.11
On June 30, 1927, the last day of the federal fiscal year, the annual income of the Oklahoma State Highway Department was $6,836,397.89
On June 30, 1928, the last day of the fiscal year, the annual income of the Oklahoma State Highway Department was $7,432.584.48
On June 30, 1931, the Oklahoma Transportation Commission adopted a plan to begin carrying its own compensation insurance, saving more than 50% over previous practices.
On June 30, 1936, the first inventory of all roads in Jackson and Kay Counties copmpleted and work began on preparing the first county maps.
On June 30, 1940, there were 8,507 miles of highways on the State Highway Systems, but only 3,027 miles were paved roads
