US Bridges

Fdr 120 over S.Fork Saddle Bayou

Poor

Grant Parish, Louisiana · No Data Entered · Structure no. 080601000002127

Built
1982
43 years old
Condition
Poor
inspected September 2024
Type
Channel Beam
Prestressed Concrete
Length
38 ft
2 main spans
Daily traffic
17
1979 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 120 over S.Fork Saddle Bayou is a prestressed concrete channel beam carrying Fdr 120 over S.Fork Saddle Bayou in Grant Parish, Louisiana. It was built in 1982, so it is 43 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 17 vehicles a day, projected to reach 25 by 2045. The structure is 38 ft (11.6 m) long and 17 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesFdr 120
CrossesS.Fork Saddle Bayou
LocationNo Data Entered
RouteFederal Lands Road 120.1
Coordinates31.69407, -92.57757
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span19 ft (5.8 m)
Deck width17 ft (5.1 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17 (1979)
Projected traffic25 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 120 over S.Fork Saddle Bayou built?

It was built in 1982, making it 43 years old in 2025.

What condition is Fdr 120 over S.Fork Saddle 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 September 2024.

How much traffic does Fdr 120 over S.Fork Saddle Bayou carry?

About 17 vehicles per day (1979 count).

How long is Fdr 120 over S.Fork Saddle Bayou?

The structure is 38 ft (11.6 m) long with a longest span of 19 ft (5.8 m) and a deck 17 ft wide.

Who owns Fdr 120 over S.Fork Saddle Bayou?

It is owned by the U.S. Forest Service.