Interstate 110 Louisiana
Turning northwest along Interstate 110 northbound between Scotlandville and Baton Rouge Metro Airport (BTR). 05/19/14
Overview
Interstate 110 winds north through Baton Rouge, joining I-10 with Downtown, the State Capitol and Baton Rouge Metropolitan Airport (BTR). The urban spur provides a high speed route to U.S. 61 (Scenic Highway) leading north from Scotlandville in north Baton Rouge to southern Mississippi. The freeway carries six lanes north to LA 19 (Scotland Avenue) and four lanes on the western leg to Scenic Highway. Speed limits are posted at 50 miles per hour on the substandard portion to the south and 60 miles per hour on the more linear stretches to the north.
A four level interchange joins Interstate 110 with U.S. 61/190 (Airline Highway) east of the Mississippi River Bridge. U.S. 190 and I-110 form part of an incident detour for I-10 and the Horace Wilkinson Bridge.
History
HistoryInitial construction for Interstate 110 took place by 1956 east of Capitol Lake and south of Memorial State. Named the Baton Rouge Expressway (LA 3022), the short segment opened south to North Boulevard and north to LA 67 (22nd Street) by 1961. The viaduct system south to Interstate 10 was completed by 1963, allowing a fast route from Downtown to the eastern suburbs and I-12.
Early plans for Baton Rouge outlined a full loop north from Interstate 10 using a portion of U.S. 190 (Airline Highway) and the Mississippi River Bridge. This included a new terrain alignment from I-10 north to U.S. 190 at LA 1145, and an upgrade of U.S. 190 east to a trumpet interchange with I-410 leading south to the Baton Rouge Expressway.
The urban Interstate numerology submitted to the American Association of State Highway Officials (AASHO) by the Louisiana Department of Highways on March 27, 1958 assigned Route B10 to the loop at Baton Rouge. Changed to Interstate 410 per correspondence with AASHO on July 2, 1958, the route was approved on November 10, 1958.
1961 Gousha map showing the projected path of Interstate 410 between I-10 and U.S. 190 (Airline Highway) in West Baton Rouge Parish.
Route Information
North End – Baton Rouge, LA
South End – Baton Rouge, LA
Mileage – 8.89
Cities – Baton Rouge
- Junctions –
Source: December 31, 2021 Interstate Route Log and Finders List
I-110 Annual Average Daily Traffic (AADT)
Source: 2014/2017 AADT LADOTD Traffic Monitoring
An Interstate 410 shield placed along U.S. 190 (Airline Highway) on early 1960s maps alluded to the freeway loop planned from Baton Rouge west to Lobdell.
Extension of I-110 north to Airline Highway was completed by 1972. The freeway opened north from U.S. 61/190 to Harding Boulevard by 1978. The final link with U.S. 61 (Scenic Highway) was finished by 1984.
A number of sign changes were made along I-110 by 2003. This included the following exit renumbering:
- Interstate 10 – unnumbered, new Exits 1I/J
- Laurel Street – old Exit 1F, new Exit 1H
- Evangeline Street – old Exit 4A, new Exit 4
- Hollywood Street – old Exit 4B, new Exit 5A
- U.S. 61/190 (Airline Highway) – old Exit 5, new Exit 5B
- LA 19 – old Exit 8, new Exit 8A
- U.S. 61 (Scenic Highway), old Exits 8A/B, new Exits 8B/C
The freeway was resigned again to use Clearview font by 2013.
 Photo Guides
 Photo GuidesNorth End 
– Baton Rouge, Louisiana
North at 
Interstate 110 turns west from the half diamond interchange (Exit 8A) with LA 19 to U.S. 61 (Scenic Highway). The freeway reduces from six to four lanes here. 05/19/14
I-110 passes though residential areas of Scotlandville west to the two-wye interchange (Exits 8B/C) with U.S. 61 (Scenic Highway). 05/19/14
A pair of end signs precede the ramp split for U.S. 61 (Scenic Highway) on I-110 north. 01/05/09
U.S. 61 (Scenic Highway) angles southeast from Interstate 110 to Southern University and U.S. 190 (Airline Highway). North from Baton Rouge, the four-lane, divided highway continues to St. Francisville and Natchez, Mississippi. 05/19/14
South at
This shield assembly precedes the southbound split with Interstate 110 (Dr. Martin Luther King, Jr. Memorial Freeway) on U.S. 61 (Scenic Highway) at Scotlandville. 05/19/14
Interstate 110 begins at a two-wye interchange with U.S. 61 (Scenic Highway) beyond this pedestrian bridge spanning Scenic Highway. 05/19/14
North End Throwback
Replaced guide sign for I-110 on U.S. 61 (Scenic Highway) south at Scotlandville in north Baton Rouge. U.S. 61 meets the freeway again alongside U.S. 190 on Airline Highway. 10/13/03
New signs installed along I-110 north at Exit 8A were replaced in kind to use Clearview font by 2013. 01/05/09
With the exception of exit renumbering, the U.S. 61 overheads posted at the viaduct end above Fletcher Williams Drive were carbon copied on sign replacements. 08/12/02
This end sign was posted one quarter mile ahead of the northbound on-ramp to U.S. 61 (Scenic Highway) and the left turn for U.S. 61 south. 08/12/02
U.S. 61 travels another 38 miles in the Pelican State to Wilkinson County, Mississippi. 08/12/02
Replaced guide sign for I-110 on U.S. 61 (Scenic Highway) south at Scotlandville in north Baton Rouge. U.S. 61 meets the freeway again alongside U.S. 190 on Airline Highway. 10/13/03
South End – Baton Rouge, Louisiana
South at 
The first sign for Exits 1 I-J and Interstate 10 appears along I-110 on the Baton Rouge Expressway south ahead of the Louisiana State Capitol. 10/08/21
Left Exit 1 A lowers from the I-110 viaduct to LA 73 (Government Street). The freeway continues south to the separation of Exit 1 J for Lafayette and Exit 1 K for the eastern suburbs, I-12 and New Orleans. 10/08/21
The exchange with Interstate 10 is often congested due to the sharp turn I-10 makes between the Horace Wilkinson Bridge approach to the west and the curve southeast toward Louisiana State University (LSU). 10/08/21
Left Exit 1 J separates from the ramp linking I-110 south with I-10 east at Exit 1 K for Terrace Street and Braddock Street south to Washington Street. 10/08/21
West at
I-10 westbound elevates on a system of viaducts from Exit 155 C for Louise Street to the split with I-110 north at Exit 155 B. I-110 connects I-10 west with U.S. 61-190 Business (Florida Street) to Mid-City. 05/19/14
The I-10 mainline bottlenecks to four overall lanes through the directional T interchange with I-110. The freeway turns west to span the Mississippi River ahead of Port Allen. I-110 begins with a 50 mile per hour speed limit, navigating between Mid City and Downtown along a viaduct system. 05/19/14
Coupled with a sharp curve and 35 mile per speed limit for trucks, the substandard ramps at I-110 north (Exit 155B) add to the routine congestion during peak hour traffic or during accidents, construction or severe weather. 05/19/14
East at
Interstate 10 ascends onto the Horace Wilkinson Bridge initially with two eastbound lanes. Flyover ramps from LA 1 at Port Allen expand the freeway east to three lanes to Left Exit 155B for I-110 north in two miles. 05/19/14
Exit 155A loops away from the Horace Wilkinson Bridge descent to LA 30 (Nicholson Drive) and Highland Road southeast to Louisiana State University (LSU). Interstate 110 begins a half mile further east. 05/19/14
I-10 turns south from the forthcoming directional T interchange (Exit 155B) and advances four miles to split with I-12 east. I-110 winds north through the city to connect I-10 with U.S. 61 north. U.S. 61 reaches Natchez, Mississippi in 90 miles. 05/19/14
Peak hour traffic congestion is a regular occurrence at Exit 155B due both to the lane drop for I-110 north and the sharp curve of the I-10 eastbound viaduct. 2014 counts recorded by LADOTD showed 92,084 vpd along the I-10 mainline here and 19,528 vpd using the ramps to I-110 north and from I-110 south. Photo taken 05/19/14.
South End Throwback
South at
1.5 miles ahead of I-10 on I-110 south by Memorial Stadium and Exit 1 E to LA 3045 (Capitol Access Road). 01/05/09
The previous lane configuration for Interstate 110 south at I-10 allocated three lanes for eastbound. This changed in 2003 with the restriping of Exit 1I to two lanes. 08/12/02
Guide signs installed in 2003 assigned exit numbers for Interstate 10. 10/15/03
Interstate 110 defaulted onto I-10 east toward Gonzalez and New Orleans. A single lane ramp joined I-10 west ahead of Port Allen. Photo by Chris Patriarca (04/13/03).
West at
I-10 proceeds west across City Park Lake en route to I-110 and Downtown Baton Rouge. 01/05/09
Four tenths of a mile south of I-110 (Exit 155B) on I-10 west. The freeway spur represents the primary route to industrial facilities located along the Mississippi River, the State Capitol complex and Baton Rouge Metro Airport (BTR). 10/18/03
The Louisiana State Capitol appeared on the northern horizon as traffic separated for Interstate 10 west to the Horace Wilkinson Bridge and I-110 north to Downtown and Scotlandville. 10/18/03
Older guide signs referenced Business District in place of Downtown Baton Rouge for I-110 north. 01/12/96
A third northbound lane opens for Interstate 110 north as I-10 west makes a 90 degree curve. These signs were replaced by 2003, and again by 2013. 01/05/09
East at
A series of diagrammatic signs outlined the forthcoming lane drop for Interstate 110 north. 01/15/06
Interstate 110 runs along the east side of Downtown Baton Rouge, while LA 30 (Nicholson Drive) north from Exit 155A serves Downtown from I-10. 01/15/06
An older sign bridge in use at the unmarked off-ramp for LA 30 (Exit 155A). New signs switched Business District with Downtown for I-110 north control point. 10/22/03
I-10 begins a southerly course toward New Orleans from the south end of Interstate 110 in Baton Rouge. The freeway enters the New Orleans city limits in 75 miles. 01/15/06
The construction timeline for Interstate 110 was derived from Louisiana Official Highway Maps.
Page updated July 2, 2022.