US Bridges

LA0955 over Monahan Bayou

PoorPosted for load

East Feliciana Parish, Louisiana · 1.8 M S of LA 10&LA 955 · Structure no. 611908191507381

Built
1966
59 years old
Condition
Poor
inspected December 2024
Type
Slab
Concrete
Length
59 ft
3 main spans
Daily traffic
989
2021 count
Owner
State
State Highway Agency

About this bridge

LA0955 over Monahan Bayou is a concrete slab carrying LA0955 over Monahan Bayou in East Feliciana Parish, Louisiana. It was built in 1966, so it is 59 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 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. Its operating status is: posted for load restriction.

It carries about 989 vehicles a day, roughly 14% of them trucks, projected to reach 1,087 by 2041. The structure is 59 ft (18 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLA0955
CrossesMonahan Bayou
Location1.8 M S of LA 10&LA 955
RouteState Highway 955
Coordinates30.83309, -91.05212
Functional classRural Minor Collector

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19 US tons
Inventory rating14.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length59 ft (18 m)
Longest span19 ft (5.8 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic989 (2021)
Projected traffic1,087 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 LA0955 over Monahan Bayou built?

It was built in 1966, making it 59 years old in 2025.

What condition is LA0955 over Monahan 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 LA0955 over Monahan Bayou carry?

About 989 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is LA0955 over Monahan Bayou?

The structure is 59 ft (18 m) long with a longest span of 19 ft (5.8 m) and a deck 29 ft wide.

Who owns LA0955 over Monahan Bayou?

It is owned by the State Highway Agency.