US Bridges

I0049 over Myra-Mirtus RD

Fair

Caddo Parish, Louisiana · I-49 over Myra-Myrtis RD · Structure no. 040900000040387

Built
2014
11 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
570 ft
1 main span
Daily traffic
53,023
2021 count
Owner
State
State Highway Agency

About this bridge

I0049 over Myra-Mirtus RD is a prestressed concrete stringer/multi-beam or girder carrying I0049 over Myra-Mirtus RD in Caddo Parish, Louisiana. It was built in 2014, so it is 11 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 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 53,023 vehicles a day, roughly 36% of them trucks, projected to reach 58,325 by 2041. The structure is 570 ft (173.7 m) long and 43 ft wide.

CarriesI0049
CrossesMyra-Mirtus RD
LocationI-49 over Myra-Myrtis RD
RouteInterstate 49
Coordinates32.94245, -93.8975
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.6 US tons
Inventory rating27.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+5 approach)
Design loadHL 93
Structure length570 ft (173.7 m)
Longest span124 ft (37.8 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53,023 (2021)
Projected traffic58,325 by 2041
Trucks36%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I0049 over Myra-Mirtus RD built?

It was built in 2014, making it 11 years old in 2025.

What condition is I0049 over Myra-Mirtus RD 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 May 2024.

How much traffic does I0049 over Myra-Mirtus RD carry?

About 53,023 vehicles per day (2021 count), of which roughly 36% are trucks.

How long is I0049 over Myra-Mirtus RD?

The structure is 570 ft (173.7 m) long with a longest span of 124 ft (37.8 m) and a deck 43 ft wide.

Who owns I0049 over Myra-Mirtus RD?

It is owned by the State Highway Agency.