US Bridges

I0049 over LA 121

Fair

Rapides Parish, Louisiana · 1.65 Mi. North of LA 1200 · Structure no. 084004550546501

Built
1989
36 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
224 ft
3 main spans
Daily traffic
25,477
2021 count
Owner
State
State Highway Agency

About this bridge

I0049 over LA 121 is a prestressed concrete stringer/multi-beam or girder carrying I0049 over LA 121 in Rapides Parish, Louisiana. It was built in 1989, so it is 36 years old, younger 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 5 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 25,477 vehicles a day, roughly 30% of them trucks, projected to reach 28,024 by 2041. The structure is 224 ft (68.3 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI0049
CrossesLA 121
Location1.65 Mi. North of LA 1200
RouteInterstate 49
CountyRapides Parish
StateLouisiana
Coordinates31.39215, -92.6921
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionOctober 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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span90 ft (27.4 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,477 (2021)
Projected traffic28,024 by 2041
Trucks30%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0049 over LA 121 built?

It was built in 1989, making it 36 years old in 2025.

What condition is I0049 over LA 121 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 October 2024.

How much traffic does I0049 over LA 121 carry?

About 25,477 vehicles per day (2021 count), of which roughly 30% are trucks.

How long is I0049 over LA 121?

The structure is 224 ft (68.3 m) long with a longest span of 90 ft (27.4 m) and a deck 43 ft wide.

Who owns I0049 over LA 121?

It is owned by the State Highway Agency.