US Bridges

Log Ferry RD over Posten Bayou

Poor

Bossier Parish, Louisiana · 4.5M North of HWY 537 · Structure no. 040833005934641

Built
1992
33 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
137 ft
9 main spans
Daily traffic
80
2020 count
Owner
County
County Highway Agency

About this bridge

Log Ferry RD over Posten Bayou is a wood or timber stringer/multi-beam or girder carrying Log Ferry RD over Posten Bayou in Bossier Parish, Louisiana. It was built in 1992, so it is 33 years old, younger 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 4 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.

It carries about 80 vehicles a day, projected to reach 88 by 2040. The structure is 137 ft (41.8 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLog Ferry RD
CrossesPosten Bayou
Location4.5M North of HWY 537
RouteCounty Highway 0
CountyBossier Parish
StateLouisiana
Coordinates33.00791, -93.77548
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating30 US tons
Inventory rating21.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans9
Design loadH 20
Structure length137 ft (41.8 m)
Longest span15 ft (4.6 m)
Deck width26 ft (8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2020)
Projected traffic88 by 2040
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$454,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Log Ferry RD over Posten Bayou built?

It was built in 1992, making it 33 years old in 2025.

What condition is Log Ferry RD over Posten Bayou 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 Log Ferry RD over Posten Bayou carry?

About 80 vehicles per day (2020 count).

How long is Log Ferry RD over Posten Bayou?

The structure is 137 ft (41.8 m) long with a longest span of 15 ft (4.6 m) and a deck 26 ft wide.

Who owns Log Ferry RD over Posten Bayou?

It is owned by the County Highway Agency.