# Louisiana Highway 73

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).

## Route description

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 River Road. LA 73 ends at an intersection with the southbound beginning of LA 30, also known as St. Philip Street.

## History

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. As of 2018, the portion west of LA 948 is under agreement to be removed from the state highway system and transferred to local control.

## Major junctions

| Parish | Location | mi | km | Destinations | Notes |
| Ascension | Geismar | 0.0 | 0.0 | LA 75 (River Road) | |
| Ascension | Geismar | 1.5 | 2.4 | LA 30 | |
| Ascension | Dutchtown | 3.4 | 5.5 | LA 429 east (Cornerview Road) – Gonzales | Western terminus of LA 429 |
| Ascension | Dutchtown | 4.4 | 7.1 | LA 74 | |
| Ascension | Prairieville | 5.3– 5.6 | 8.5– 9.0 | I-10 – New Orleans, Baton Rouge | Exit 173 (I-10) |
| Ascension | Prairieville | 5.6 | 9.0 | LA 621 east | Western terminus of LA 621 |
| Ascension | Prairieville | 7.9 | 12.7 | US 61 south (Airline Highway) – New Orleans | Southern end of US 61 concurrency |
| Ascension | Prairieville | 8.0 | 12.9 | US 61 north (Airline Highway) | Northern end of US 61 concurrency |
| Ascension | Prairieville | 9.2 | 14.8 | LA 42 | |
| Ascension | Prairieville | 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 |
| East Baton Rouge | Baton Rouge | 16.6 | 26.7 | US 61 south (Airline Highway) | Southern end of US 61 concurrency |
| East Baton Rouge | Baton Rouge | 16.9 | 27.2 | LA 3246 west (Siegen Lane) / Sherwood Forest Boulevard | Eastern terminus of LA 3246 |
| East Baton Rouge | 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 |
| East Baton Rouge | Westminster–Baton Rouge line | 19.4 | 31.2 | I-12 east – Hammond | Eastbound I-12 entrance only |
| East Baton Rouge | Westminster–Baton Rouge line | 19.5 | 31.4 | LA 1068 north (Drusilla Drive) | Southern terminus of LA 1068 |
| East Baton Rouge | Baton Rouge | 19.9 | 32.0 | LA 3064 south (Essen Lane) to I-12 west | Northern terminus of LA 3064 |
| East Baton Rouge | Baton Rouge | 21.1 | 34.0 | LA 426 east (Old Hammond Highway) / Corporate Boulevard | Western terminus of LA 426 |
| East Baton Rouge | Baton Rouge | 24.3 | 39.1 | LA 427 south (South Acadian Thruway) | Northern terminus of LA 427 |
| East Baton Rouge | Baton Rouge | 25.0 | 40.2 | LA 67 north (South 22nd Street) | Southern terminus of LA 67 |
| East Baton Rouge | Baton Rouge | 25.7– 25.8 | 41.4– 41.5 | 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 |
| East Baton Rouge | Baton Rouge | 26.3 | 42.3 | LA 30 (St. Louis Street) | Northern terminus of LA 30 northbound (One-way pair) |
| East Baton Rouge | Baton Rouge | 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 Concurrency terminus Incomplete access ||||||