US Bridges

Orphe Guidry Rd. over Grand Canal

FairPosted for load

St. Martin Parish, Louisiana · 1.4 MI NE of LA 686 · Structure no. 035030228915181

Built
1969
56 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
76 ft
4 main spans
Daily traffic
149
2020 count
Owner
County
County Highway Agency

About this bridge

Orphe Guidry Rd. over Grand Canal is a concrete slab carrying Orphe Guidry Rd. over Grand Canal in St. Martin Parish, Louisiana. It was built in 1969, so it is 56 years old, older 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. Its operating status is: posted for load restriction.

It carries about 149 vehicles a day, projected to reach 163 by 2040. The structure is 76 ft (23.2 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesOrphe Guidry Rd.
CrossesGrand Canal
Location1.4 MI NE of LA 686
RouteCounty Highway 0
CountySt. Martin Parish
StateLouisiana
Coordinates30.37945, -91.8622
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans4
Design loadHS 20
Structure length76 ft (23.2 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 traffic149 (2020)
Projected traffic163 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Orphe Guidry Rd. over Grand Canal built?

It was built in 1969, making it 56 years old in 2025.

What condition is Orphe Guidry Rd. over Grand Canal 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 2024.

How much traffic does Orphe Guidry Rd. over Grand Canal carry?

About 149 vehicles per day (2020 count).

How long is Orphe Guidry Rd. over Grand Canal?

The structure is 76 ft (23.2 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Orphe Guidry Rd. over Grand Canal?

It is owned by the County Highway Agency.