Traffic on a busy section of the highway north of Wellington has slowed to a crawl after a car crash.
Transport authorities are warning motorists to expect "significant delays" on State Highway One, after the crash on the bridge south of Waikanae on the Kapiti Coast about 4.30pm today.
The road was opened to traffic in both directions about 5pm, but the NZ Transport Agency was still warning motorists to expect a slow trip through Waikanae.
By 5.15pm, a trip from the Wellington CBD to Waikanae was taking more than 90 minutes.