US Bridges

US0084 over Bayou Castor

Poor

De Soto Parish, Louisiana · 2.1 MI East of LA 5 · Structure no. 041600000017040

Built
1951
74 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
281 ft
4 main spans
Daily traffic
6,314
2021 count
Owner
State
State Highway Agency

About this bridge

US0084 over Bayou Castor is a steel stringer/multi-beam or girder carrying US0084 over Bayou Castor in De Soto Parish, Louisiana. It was built in 1951, so it is 74 years old, older than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,314 vehicles a day, roughly 18% of them trucks, projected to reach 6,945 by 2041. The structure is 281 ft (85.6 m) long and 31 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesUS0084
CrossesBayou Castor
Location2.1 MI East of LA 5
RouteU.S. Route 84
Coordinates31.97374, -93.9706
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.6 US tons
Inventory rating26.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length281 ft (85.6 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,314 (2021)
Projected traffic6,945 by 2041
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

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$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was US0084 over Bayou Castor built?

It was built in 1951, making it 74 years old in 2025.

What condition is US0084 over Bayou Castor in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does US0084 over Bayou Castor carry?

About 6,314 vehicles per day (2021 count), of which roughly 18% are trucks.

How long is US0084 over Bayou Castor?

The structure is 281 ft (85.6 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns US0084 over Bayou Castor?

It is owned by the State Highway Agency.