To be honest, I’d be surprised if anyone could answer this question. This road is not on any main cycling route and few people cycle here. I think you’ll need to go there and be the one updating us on the situation. Tunnels don’t collape so I think you get through them without too many problems. But of course, you do so at your own risk. Can I ask why you plan to cycle here? Are you going up or down the E6 road?