Bumped and promoted from comments by markfromireland:

Via Aswat al-Iraq

Salah al-Din, Aug 8, (VOI) – Unidentified gunmen blew up a major bridge in Salah al-Din's Yathrib neighborhood, which linked it to Balad district, a local police source said on Wednesday.

"The gunmen detonated a truck bomb on the bridge by remote control, leading the 30-meter long bridge to collapse and causing severe damage to nearby houses," the source said in statements to the independent news agency Voices of Iraq (VOI)

No further details were given by the source.

The Shiite district of Balad is located 110 km north of Baghdad.

The war of the bridges continues, as the insurgents seek to isolate as many communities as possible. As a bonus, these lost bridges also isolate US occupation forces, making reinforcement and supply more difficult.

The above map cuts are dated 2003. It’s unlikely there have been any significant road improvements since then.

The War of the Bridges series

The Bridges of Iraq

The War of the Bridges

Another Bridge Attack

Baghdad Bridges Falling Down

The Daily Bridge Attack

Balad Bridge