US Bridges

Little Missouri Lp over Cypress Bayou

Fair

Morehouse Parish, Louisiana · 1.6 MI North Int. 157 · Structure no. 053432478913661

Built
1986
39 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
133 ft
6 main spans
Daily traffic
320
1974 count
Owner
County
County Highway Agency

About this bridge

Little Missouri Lp over Cypress Bayou is a concrete slab carrying Little Missouri Lp over Cypress Bayou in Morehouse Parish, Louisiana. It was built in 1986, so it is 39 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 5 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 320 vehicles a day, projected to reach 352 by 1994. The structure is 133 ft (40.5 m) long and 27 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesLittle Missouri Lp
CrossesCypress Bayou
Location1.6 MI North Int. 157
RouteCounty Highway 0
CountyMorehouse Parish
StateLouisiana
Coordinates32.79483, -91.61041
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating38.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (1974)
Projected traffic352 by 1994
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Little Missouri Lp over Cypress Bayou built?

It was built in 1986, making it 39 years old in 2025.

What condition is Little Missouri Lp over Cypress 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 Little Missouri Lp over Cypress Bayou carry?

About 320 vehicles per day (1974 count).

How long is Little Missouri Lp over Cypress Bayou?

The structure is 133 ft (40.5 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns Little Missouri Lp over Cypress Bayou?

It is owned by the County Highway Agency.