Concrete pieces from Miyanooka Ramp Bridge on the Sasson Expressway
About falling

NEXCO EAST Hokkaido Regional Head Office (Sapporo Atsubetsu-ku) manages Sasson Expressway in the house of the hill lamp (Miyanooka lamp) Bridge, events that concrete pieces fall has occurred. No damage such as injuries or property damage has been confirmed.

We immediately make an emergency inspection of the relevant part and confirm that there is no problem in safety. We apologize for any inconvenience caused to our neighbors.

1 History of discovery

The 1st report to our company About 15:40 on Wednesday, February 27, 2013, the residents in the vicinity of the site notified us that concrete pieces had fallen, and confirmed the concrete pieces on site. Did.

2 Occurrence location

The intersection of the Sadaru Sasson Expressway Miyanooka Ramp Bridge (W14.8KP near Sapporo Nishi Interchange) and the main city road 9902 Minami 19-jo Miyanosawa Line
(Sapporo West Interchange-Sapporo Junction opened on September 30, 1992)
Site name: Nishinomiyazawa, Article 5 in Teine-ku, Sapporo City (Sapporo Shizuku Nishimi no Sawa Gojo)

3 dropped concrete pieces

Approximately 25 cm x 25 cm x 10 cm (5.8 kg) 1 pc

4 Cause of fall

It is highly probable that the concrete was peeled off and dropped due to the infiltration of water due to the aged deterioration of the concrete and the corrosive expansion of the reinforcing bars.

5 Inspection history of the location

July 2008 No abnormality (close visual inspection)
May 2012 No abnormality (distant vision)

6 Response status at the relevant location

Due to the occurrence of an event, an emergency inspection of the bridge was carried out on February 27 and it has been confirmed that there are no problems with safety.

[Situation photo]