heading southeast toward Pittsburgh while I-80 exits the Turnpike and continues east toward Youngstown. The Ohio Turnpike carries I-76 until the Pennsylvania border, where I-76 joins the Pennsylvania Turnpike. Pennsylvania Pennsylvania Turnpike From the Ohio border, the Pennsylvania Turnpike carries I-76 into and across most of Pennsylvania, bypassing Youngstown to the south and Pittsburgh to the north. There is a free interchange with US 19 and I-79 near Wexford. At one point, I-76 used to begin in Pittsburgh on a route that is now signed as I-376, around the 1970s. It intersects with this highway in Monroeville. From New Stanton to Breezewood, I-76 is concurrent with I-70. In this section are the bypass (built in the 1960s) of the Laurel Hill Tunnel, then the still-in-use Allegheny Mountain Tunnel in a relatively unpopulated section of South Central Pennsylvania, and then an indirect connection with I-99 in Bedford. The highway also passes through a wind farm in Somerset County and is the closest Interstate Highway to the Flight 93 National Memorial in Shanksville. At Breezewood, I-70 exits the turnpike (making use of a short stretch of the old alignment of the Pennsylvania Turnpike), while I-76 bypasses the Rays Hill and Sideling Hill tunnels along a new alignment built in the 1960s. The major features of this section are more mountains with the Tuscarora Mountain Tunnel and then a double tunnel (Kittatinny/Blue Mountain) prior to Pennsylvania Route 997 (PA 997) near Shippensburg. I-76 intersects I-81 (indirectly) in Carlisle then I-83 and I-283 near Harrisburg, bypassing Harrisburg to the south. The Susquehanna River Bridge is a six-lane bridge that was constructed in 2003 using precast segments that replaced an older bridge across the Susquehanna River. In Morgantown, I-176 provides a connection north to Reading. At Valley Forge, I-76 diverges toward Philadelphia, but the Turnpike (as I-276) bypasses it to the north. Schuylkill Expressway At Valley Forge, northwest of Philadelphia, I-76 leaves the Pennsylvania Turnpike to run into Philadelphia on the Schuylkill Expressway (while the Pennsylvania Turnpike continues east as I-276). Immediately after exiting the Turnpike, I-76 interchanges with the US 202 and US 422 freeways near King of Prussia. I-76 later crosses I-476 near Conshohocken and begins running along the southwest shore of the Schuylkill River. I-76 then enters the city/county limits of Philadelphia where interchanges provide access to the Roosevelt Expressway (US 1) and the Vine Street Expressway (I-676); the latter runs through