US Bridges

Guidry RD over Nezpique Bayou

Fair

Allen Parish, Louisiana · 1.1 MI N of LA1159 · Structure no. 070230322923601

Built
1986
39 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete
Length
190 ft
10 main spans
Daily traffic
36
2020 count
Owner
County
County Highway Agency

About this bridge

Guidry RD over Nezpique Bayou is a concrete slab carrying Guidry RD over Nezpique Bayou in Allen Parish, Louisiana. It was built in 1986, so it is 39 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 36 vehicles a day, projected to reach 39 by 2040. The structure is 190 ft (57.9 m) long and 27 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesGuidry RD
CrossesNezpique Bayou
Location1.1 MI N of LA1159
RouteCounty Highway 0
CountyAllen Parish
StateLouisiana
Coordinates30.53492, -92.60008
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating52.5 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans10
Design loadHS 20
Structure length190 ft (57.9 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36 (2020)
Projected traffic39 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Guidry RD over Nezpique Bayou built?

It was built in 1986, making it 39 years old in 2025.

What condition is Guidry RD over Nezpique 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 October 2023.

How much traffic does Guidry RD over Nezpique Bayou carry?

About 36 vehicles per day (2020 count).

How long is Guidry RD over Nezpique Bayou?

The structure is 190 ft (57.9 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Guidry RD over Nezpique Bayou?

It is owned by the County Highway Agency.