US Bridges

Three Mile Rd. over East Lacassine Bayou

FairPosted for load

Jefferson Davis Parish, Louisiana · 1.60 Mi. E. of Int. LA 99 · Structure no. 072730166924781

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
58 ft
3 main spans
Daily traffic
40
2019 count
Owner
County
County Highway Agency

About this bridge

Three Mile Rd. over East Lacassine Bayou is a wood or timber stringer/multi-beam or girder carrying Three Mile Rd. over East Lacassine Bayou in Jefferson Davis Parish, Louisiana. It was built in 1970, so it is 55 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 6 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 40 vehicles a day, projected to reach 44 by 2039. The structure is 58 ft (17.7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesThree Mile Rd.
CrossesEast Lacassine Bayou
Location1.60 Mi. E. of Int. LA 99
RouteCounty Highway 0
CountyJefferson Davis Parish
StateLouisiana
Coordinates30.27624, -92.79602
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating26 US tons
Inventory rating15 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length58 ft (17.7 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2019)
Projected traffic44 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Three Mile Rd. over East Lacassine Bayou built?

It was built in 1970, making it 55 years old in 2025.

What condition is Three Mile Rd. over East Lacassine 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 Three Mile Rd. over East Lacassine Bayou carry?

About 40 vehicles per day (2019 count).

How long is Three Mile Rd. over East Lacassine Bayou?

The structure is 58 ft (17.7 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns Three Mile Rd. over East Lacassine Bayou?

It is owned by the County Highway Agency.