US Bridges

I0110 over US 61B & LA 73

Fair

East Baton Rouge Parish, Louisiana · JCT of I-110 & LA 73 · Structure no. 611704509200262

Built
1963
62 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
3,836 ft
72 main spans
Daily traffic
32,092
2021 count
Owner
State
State Highway Agency

About this bridge

I0110 over US 61B & LA 73 is a steel stringer/multi-beam or girder carrying I0110 over US 61B & LA 73 in East Baton Rouge Parish, Louisiana. It was built in 1963, so it is 62 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 32,092 vehicles a day, roughly 9% of them trucks, projected to reach 35,301 by 2041. The structure is 3,836 ft (1,169.2 m) long and 60 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesI0110
CrossesUS 61B & LA 73
LocationJCT of I-110 & LA 73
RouteInterstate 110
CountyEast Baton Rouge Parish
StateLouisiana
Coordinates30.45298, -91.18077
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating26.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans72
Design loadHS 20
Structure length3,836 ft (1,169.2 m)
Longest span90 ft (27.4 m)
Deck width60 ft (18.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,092 (2021)
Projected traffic35,301 by 2041
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$18 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0110 over US 61B & LA 73 built?

It was built in 1963, making it 62 years old in 2025.

What condition is I0110 over US 61B & LA 73 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does I0110 over US 61B & LA 73 carry?

About 32,092 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is I0110 over US 61B & LA 73?

The structure is 3,836 ft (1,169.2 m) long with a longest span of 90 ft (27.4 m) and a deck 60 ft wide.

Who owns I0110 over US 61B & LA 73?

It is owned by the State Highway Agency.