US Bridges

84th ST over Brushy Bayou

Fair

Caddo Parish, Louisiana · 0.10 MI East of Wynngate · Structure no. 040932257934631

Built
1987
38 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
200 ft
10 main spans
Daily traffic
3,594
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

84th ST over Brushy Bayou is a concrete slab carrying 84th ST over Brushy Bayou in Caddo Parish, Louisiana. It was built in 1987, so it is 38 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 3,594 vehicles a day, projected to reach 3,953 by 2039. The structure is 200 ft (61 m) long and 59 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries84th ST
CrossesBrushy Bayou
Location0.10 MI East of Wynngate
RouteCounty Highway 0
CountyCaddo Parish
StateLouisiana
Coordinates32.42971, -93.7729
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating32.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length200 ft (61 m)
Longest span20 ft (6.1 m)
Deck width59 ft (18 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,594 (2019)
Projected traffic3,953 by 2039
Trucks—
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 84th ST over Brushy Bayou built?

It was built in 1987, making it 38 years old in 2025.

What condition is 84th ST over Brushy Bayou 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 March 2023.

How much traffic does 84th ST over Brushy Bayou carry?

About 3,594 vehicles per day (2019 count).

How long is 84th ST over Brushy Bayou?

The structure is 200 ft (61 m) long with a longest span of 20 ft (6.1 m) and a deck 59 ft wide.

Who owns 84th ST over Brushy Bayou?

It is owned by the City or Municipal Highway Agency.