It’s not bad, but I think the straight appraoching Turn 4 is a much better position for the start line and pits. There’s no way the start line would be included on a curve like that. And if the circuit is 6.3km long, that’s a very long pit lane – drivers given a drive-through could conceivably set a faster lap time than if they went around the actual circuit.
It is very good and I like the design (which software is used?) but I have to agree about the pits and the bridge, it’s a bit up down too quickly for an F1 car. It would work better as a smooth bank upwards towards T4 I think.