US Bridges

LA1217 over Harpoon Bayou

Fair

Sabine Parish, Louisiana · 1.38 Mi. North of LA 6 · Structure no. 084301130101381

Built
1998
27 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
1,645
2021 count
Owner
State
State Highway Agency

About this bridge

LA1217 over Harpoon Bayou is a concrete slab carrying LA1217 over Harpoon Bayou in Sabine Parish, Louisiana. It was built in 1998, so it is 27 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 1,645 vehicles a day, roughly 14% of them trucks, projected to reach 1,809 by 2041. The structure is 100 ft (30.5 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesLA1217
CrossesHarpoon Bayou
Location1.38 Mi. North of LA 6
RouteState Highway 1217
CountySabine Parish
StateLouisiana
Coordinates31.59364, -93.4734
Functional classRural Minor Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 alignment7: Better than present minimum criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width43 ft (13 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,645 (2021)
Projected traffic1,809 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LA1217 over Harpoon Bayou built?

It was built in 1998, making it 27 years old in 2025.

What condition is LA1217 over Harpoon 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 September 2024.

How much traffic does LA1217 over Harpoon Bayou carry?

About 1,645 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA1217 over Harpoon Bayou?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 43 ft wide.

Who owns LA1217 over Harpoon Bayou?

It is owned by the State Highway Agency.