Louisiana Highway 73

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Louisiana Highway 73 marker

Louisiana Highway 73
Route information
Maintained by Louisiana DOTD
Length: 26.3 mi[1] (42.3 km)
Major junctions
South end: LA 75 near Geismar
  I-10 near Prairieville
US 61 in Prairieville
US 61 in Inniswold
I-110 in Baton Rouge
North end: LA 30 in Baton Rouge
Parishes: Ascension, East Baton Rouge
Highway system
  • Louisiana Highway System
LA 72 LA 74

Louisiana Highway 73 (LA 73) is a state highway in Louisiana stretching from Geismar to Baton Rouge. LA 73 was built as a bypass to the backbends of River Road. It was soon after bypassed itself in a more complete way with U.S. Route 61 (Airline Highway).[citation needed]

Route description[edit]

From LA 75 (River Road), LA 73 travels north north east as an undivided two-lane road through the Dutchtown area before hitting I-10 and US 61. From US 61 it turns north through Prairieville, Louisiana and turns northwest to cross Bayou Manchac. At one time, this portion of the highway was called Hope Villa Road. For most of its length in East Baton Rouge Parish, LA 73 is known as Jefferson Highway. At Tiger Bend Road it becomes a four-lane with turning lane for about a mile and before becoming concurrent with Airline Highway for another mile. After leaving Airline Highway it takes a generally northwesterly path until it becomes Government Street at the entrance to downtown Baton Rouge. As Government Street it proceeds due west to a junction with LA 991 (River Road). LA 73 ends at an intersection with the southbound beginning of LA 30, also known as St. Philip Street.[1]


The route of LA 73 was originally called "Clay Cut Road," as it roughly followed the Claycut Bayou through the southern part of East Baton Rouge Parish. Other names for the road were Hope Villa Road, as it traversed through the community of Hope Villa in Ascension Parish. When the Jefferson Highway auto trail was designated in 1916, Clay Cut and Hope Villa Roads became part of the new road (there is now another Claycut Road in Baton Rouge, located south of the present-day LA-73). When Louisiana numbered their highways in 1921 plan, Jefferson Highway was designated Louisiana Highway 1. US 61 followed the section between Prairieville and the Mississippi River from 1926 until 1933 when the Airline Highway was opened between Prairieville and the Bonnet Carré Spillway. US 61 remained on the section between Prairieville and Baton Rouge until 1941, when Airline Highway was extended into Baton Rouge.

Major junctions[edit]

Parish Location mi[1] km Destinations Notes
Ascension Geismar 0.0 0.0 LA 75 (River Road)
1.5 2.4 LA 30
Dutchtown 3.4 5.5 LA 429 east (Cornerview Road) – Gonzales Western terminus of LA 429
4.4 7.1 LA 74
Prairieville 5.3–
I-10 – New Orleans, Baton Rouge Exit 173 (I-10)
5.6 9.0 LA 621 east Western terminus of LA 621
7.9 12.7 US 61 south (Airline Highway) – New Orleans Southern end of US 61 concurrency
8.0 12.9 US 61 north (Airline Highway) Northern end of US 61 concurrency
9.2 14.8 LA 42
10.2 16.4 LA 427 north Southern terminus of LA 427
East Baton Rouge Old Jefferson 12.7 20.4 LA 948 west / Round Oak Drive Western terminus of LA 948
Baton Rouge 16.6 26.7 US 61 south (Airline Highway) Southern end of US 61 concurrency
16.9 27.2 LA 3246 west (Siegen Lane) / Sherwood Forest Boulevard Eastern terminus of LA 3246
Inniswold 17.6 28.3 US 61 north (Airline Highway) – Baton Rouge Interchange; northern end of US 61 concurrency; northbound US 61 to northbound LA 73 and southbound LA 73 to southbound US 61 only
WestminsterBaton Rouge line 19.4 31.2 I-12 east – Hammond Eastbound I-12 entrance only
19.5 31.4 LA 1068 north (Drusilla Drive) Southern terminus of LA 1068
Baton Rouge 19.9 32.0 LA 3064 south (Essen Lane) to I-12 west Northern terminus of LA 3064
21.1 34.0 LA 426 east (Old Hammond Highway) / Corporate Boulevard Western terminus of LA 426
24.3 39.1 LA 427 south (South Acadian Thruway) Northern terminus of LA 427
25.0 40.2 LA 67 north (South 22nd Street) Southern terminus of LA 67
I-110 north – Metro Airport, Natchez, MS
South 10th Street to I-10 east / I-12 east – New Orleans, Hammond
Exit 1A (I-110); no access from eastbound I-10
26.3 42.3 LA 30 (St. Louis Street) Northern terminus of LA 30 northbound (One-way pair)
26.3 42.3 LA 30 south (St. Philips Street) Northern terminus of LA 30 southbound (One-way pair)
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


KML is from Wikidata
  1. ^ a b c Google (January 20, 2015). "Louisiana Highway 73" (Map). Google Maps. Google. Retrieved January 20, 2015.