US Bridges

US0084 over Black River

Fair

Concordia Parish, Louisiana · 16 Miles from Jct. US 84 · Structure no. 581500000580150

Built
2009
16 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
3,203 ft
3 main spans
Daily traffic
7,080
2021 count
Owner
State
State Highway Agency

About this bridge

US0084 over Black River is a steel stringer/multi-beam or girder carrying US0084 over Black River in Concordia Parish, Louisiana. It was built in 2009, so it is 16 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 7,080 vehicles a day, roughly 20% of them trucks, projected to reach 7,788 by 2041. The structure is 3,203 ft (976.3 m) long and 83 ft wide. If it were closed, the detour would be 59 mi (95 km).

Location

Open in Google Maps
CarriesUS0084
CrossesBlack River
Location16 Miles from Jct. US 84
RouteU.S. Route 84
CountyConcordia Parish
StateLouisiana
Coordinates31.62467, -91.81589
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+24 approach)
Design loadHS 20
Structure length3,203 ft (976.3 m)
Longest span250 ft (76.2 m)
Deck width83 ft (25.4 m)
Roadway width79 ft (24 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,080 (2021)
Projected traffic7,788 by 2041
Trucks20%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed59 mi (95 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US0084 over Black River built?

It was built in 2009, making it 16 years old in 2025.

What condition is US0084 over Black River 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 June 2023.

How much traffic does US0084 over Black River carry?

About 7,080 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is US0084 over Black River?

The structure is 3,203 ft (976.3 m) long with a longest span of 250 ft (76.2 m) and a deck 83 ft wide.

Who owns US0084 over Black River?

It is owned by the State Highway Agency.