US Bridges

Grand RD over Drainage Canal

PoorPosted for load

Iberville Parish, Louisiana · 0.5 Mi. E. of LA 69 · Structure no. 612430068910881

Built
1975
50 years old
Condition
Poor
inspected December 2024
Type
Slab
Concrete
Length
58 ft
3 main spans
Daily traffic
90
2019 count
Owner
County
County Highway Agency

About this bridge

Grand RD over Drainage Canal is a concrete slab carrying Grand RD over Drainage Canal in Iberville Parish, Louisiana. It was built in 1975, so it is 50 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 3 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. Its operating status is: posted for load restriction.

It carries about 90 vehicles a day, projected to reach 99 by 2039. The structure is 58 ft (17.7 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesGrand RD
CrossesDrainage Canal
Location0.5 Mi. E. of LA 69
RouteCounty Highway 0
CountyIberville Parish
StateLouisiana
Coordinates30.11348, -91.1483
Functional classRural Local

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating10.7 US tons
Inventory rating8.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span19 ft (5.8 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2019)
Projected traffic99 by 2039
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$220,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Grand RD over Drainage Canal built?

It was built in 1975, making it 50 years old in 2025.

What condition is Grand RD over Drainage Canal 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 December 2024.

How much traffic does Grand RD over Drainage Canal carry?

About 90 vehicles per day (2019 count).

How long is Grand RD over Drainage Canal?

The structure is 58 ft (17.7 m) long with a longest span of 19 ft (5.8 m) and a deck 26 ft wide.

Who owns Grand RD over Drainage Canal?

It is owned by the County Highway Agency.