US Bridges

Nibletts Bluff RD over Gum Slough

Good

Calcasieu Parish, Louisiana · 0.4 MI E of LA 109 · Structure no. 071000000071024

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete
Length
152 ft
7 main spans
Daily traffic
1,273
2022 count
Owner
County
County Highway Agency

About this bridge

Nibletts Bluff RD over Gum Slough is a concrete slab carrying Nibletts Bluff RD over Gum Slough in Calcasieu Parish, Louisiana. It was built in 2023, so it is 2 years old, younger than the Louisiana average of 43 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,273 vehicles a day, projected to reach 1,400 by 2042. The structure is 152 ft (46.3 m) long and 44 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesNibletts Bluff RD
CrossesGum Slough
Location0.4 MI E of LA 109
RouteCounty Highway 0
CountyCalcasieu Parish
StateLouisiana
Coordinates30.19438, -93.64472
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.8 US tons
Inventory rating43.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadGreater than HL 93
Structure length152 ft (46.3 m)
Longest span22 ft (6.7 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,273 (2022)
Projected traffic1,400 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Nibletts Bluff RD over Gum Slough built?

It was built in 2023, making it 2 years old in 2025.

What condition is Nibletts Bluff RD over Gum Slough in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does Nibletts Bluff RD over Gum Slough carry?

About 1,273 vehicles per day (2022 count).

How long is Nibletts Bluff RD over Gum Slough?

The structure is 152 ft (46.3 m) long with a longest span of 22 ft (6.7 m) and a deck 44 ft wide.

Who owns Nibletts Bluff RD over Gum Slough?

It is owned by the County Highway Agency.