Mississippi Highway 607 (MS 607) is a state highway in the Mississippi Gulf Coast region. The route starts at U.S. Route 90 (US 90), and it travels westward to Interstate 10 (I-10). The route has a gap as the road travels through the Stennis Space Center, but resumes north of the center to end at I-59 and US 11 south of Picayune. The road was part of US 11 and US 90, before MS 43 was designated in 1948. MS 607 was created in 1967, after MS 43 was rerouted, and Stennis Space Center was built. Route description All of the route is located in Hancock and Pearl River counties. MS 607 starts at a T-intersection with US 90 and travels westward. The route goes through a forest as a divided highway. Nearly later, MS 607 intersects MS 604 as it turns northwest. After passing by two electrical substations, it crosses a road that leads to the Mississippi welcome center and INFINITY Science Center, a NASA visitor center. The route then intersects I-10 at a diamond interchange, and state maintenance ends just north of it along with the formal designation of MS 607. United States government maintenance begins, and the road soon turns north. About later, MS 607 travels through an access gate and enters Stennis Space Center. Past the access gate, the road crosses over a canal and intersects road that leads to an old alignment of MS 43. MS 607 later shifts northwest until it meets H Road. It then travels north through thick forests for more than , until it reaches Gravel Pit Road, where it begins traveling northwest. South of Turtleskin Creek, MS 607 reaches to an access gate. State maintenance and the MS 607 designation resumes at the intersection of Texas Flat Road and the old alignment of US 11. The route continues traveling northwest as a divided highway through the forest, entering Pearl River County and intersecting Asa McQueen Road. Small houses soon appear, and the route necks down to two lanes and meets US 11 and I-59 at a diamond interchange. The road continues on into Picayune as US 11. In 2019, Mississippi Department of Transportation (MDOT) calculated as many as 8,700 vehicles traveling west of US 90, and as few as 2,900 vehicles traveling south of Texas Flat Road. All of the road is maintained by MDOT and the United States Government.