Louisiana Highway 3158
Encyclopedia
Louisiana Highway 3158 is a state highway
State highway
State highway, state road or state route can refer to one of three related concepts, two of them related to a state or provincial government in a country that is divided into states or provinces :#A...

 in Louisiana
Louisiana
Louisiana is a state located in the southern region of the United States of America. Its capital is Baton Rouge and largest city is New Orleans. Louisiana is the only state in the U.S. with political subdivisions termed parishes, which are local governments equivalent to counties...

 that serves Tangipahoa Parish
Tangipahoa Parish, Louisiana
Tangipahoa Parish is a parish located in the U.S. state of Louisiana, one of the Florida Parishes. The parish seat is Amite City, but the major city is Hammond. As of 2006, the population was 113,137...

. It spans 2.27 miles (3.7 km) in a south to north direction. It is known locally as Booker Road south of I-12 and as Airport Road north of I-12 (shortly south of the I-12 interchange, nonetheless, Booker Road reverts to maintenance by Tangipahoa Parish and continues without being a state highway).

Route description

LA 3158 begins at a diamond interchange
Diamond interchange
A diamond interchange is a common type of road junction, used where a freeway crosses a minor road. The freeway itself is grade-separated from the minor road, one crossing the other over a bridge...

 with I-12
Interstate 12
Interstate 12 is an intrastate Interstate Highway located entirely within the state of Louisiana. I-12 starts in Baton Rouge at Interstate 10, and travels along the North Shore of Lake Pontchartrain before ending at the intersection of Interstate 10 and Interstate 59 near Slidell...

 (Exit 43). It heads north and intersects LA 1067
Louisiana Highway 1067
Louisiana Highway 1067 is a state highway in Louisiana that serves Tangipahoa Parish. It spans in a southwest to northeast direction...

 (Old Covington Road) and ends at US 190
U.S. Route 190
U.S. Route 190, also known as the Ronald Reagan Memorial Highway, is an east–west United States highway in Louisiana and Texas. It evolved from the shortest of intrastate routes in 1926 to a length comparable to a main Interstate Highway route, leading from the swamps and pine forests of...

 just east of Hammond
Hammond, Louisiana
Hammond is the largest city in Tangipahoa Parish, Louisiana, United States. The population was 20,049 at the 2009 census. It is home to Southeastern Louisiana University...

 and south of the Hammond Municipal Airport.

LA 3158 is an undivided, two lane highway for its entire length except for a multilane stretch at the I-12 interchange and an adjacent truckstop.

In 2010 the four-way stop intersection of LA 3158 and LA 1067 was rebuilt as a roundabout
Roundabout
A roundabout is the name for a road junction in which traffic moves in one direction around a central island. The word dates from the early 20th century. Roundabouts are common in many countries around the world...

 without stop sign
Stop sign
A Stop sign is a traffic sign to notify drivers that they must stop before proceeding.-Specifications:The Vienna Convention on Road Signs and Signals proposed standard stop sign diameters of 0.6, 0.9 or 1.2 metres. UK and New Zealand stop signs are 750, 900 or 1200 mm, according to sign...

s.

As a due south-north road in Louisiana, LA 3158 is an anomaly. Since the 1955 Louisiana Highway renumbering
1955 Louisiana Highway renumbering
The 1955 renumbering was a renumbering of state highways which took place in Louisiana in 1955.- History :Highway numbers in Louisiana first appeared in 1921, per Act 21 of the 1921 Special Session of the Louisiana Legislature. Routes 1 through 98 were defined that year. These first 98 routes...

, Louisiana highways with cardinal south-north direction have been designated by odd numbers; an even number such as "3158" should be on a road with cardinal direction west-east. The anomaly is all-the-more stark in that LA 3158 is as straight as an arrow south-north throughout. Additionally, it intersects LA 1067 at a right angle, the cardinal direction of 1067 being west-east, which should bear an even number. The roundabout occurs at what may be the state's sole example of the meeting of two diametrically misnumbered roads.

Major junctions

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