The State Capitol security upgrade project will require a couple of road closures beginning Monday.

The road behind the State Capitol will become one-way going toward Third Street. In addition, motorists will no longer be able to circle the Arsenal Park because the roadway between the Capitol and the park will be closed.

Division of Administration communications director Meghan Parrish said the routes will be closed for two to three weeks. The closures are required while construction work continues on the $4.5 million project designed to improve security around the 34-story seat of government.

The project is supposed to be completed March 27 about two weeks before the legislative session’s April 13 start. That’s five days later than the March 22 original projected completion.

Part of the parking lot in front of the Capitol building is being converted into a pedestrian plaza. When the Legislature is in session, decorative bollards bordering the plaza will be removed and the plaza area used for parking. Bollards are vertical barriers that stop the passage of vehicles. Bollards also are being installed along the perimeter of the Capitol to stop vehicles from getting close to the Capitol from the parking lot and street.

Four security posts are being installed on the northeast, northwest, southeast and southwest corners to police parking restrictions. The stations will be manned as deemed necessary by the Legislature. Electronic controlled access to restricted lots also would be available at entrances to parking areas.

Work has been going on since July on the side of the Capitol nearest the Mississippi River and on the plaza area.

The work now is shifting to the Arsenal side.

Follow Marsha Shuler on Twitter @MarshaShulerCNB. For more coverage of the state capitol, follow Louisiana Politics at http://blogs.theadvocate.com/politicsblog/.