US Bridges

Is 55 N over Pemiscot Byu

Fair

Pemiscot County, Missouri · S 16 T 16 N R 11 E · Structure no. 303

Built
1962
63 years old, rebuilt 1984
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
163 ft
3 main spans
Daily traffic
10,841
2024 count
Owner
State
State Highway Agency

About this bridge

Is 55 N over Pemiscot Byu is a steel continuous stringer/multi-beam or girder carrying Is 55 N over Pemiscot Byu in Pemiscot County, Missouri. It was built in 1962 and reconstructed in 1984, so it is 63 years old, older than the Missouri average of 45.1 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.

It carries about 10,841 vehicles a day, roughly 43% of them trucks, projected to reach 20,056 by 2044. The structure is 163 ft (49.8 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 55 N
CrossesPemiscot Byu
LocationS 16 T 16 N R 11 E
RouteInterstate 55
Coordinates36.02682, -89.87006
Functional classRural Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating31.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length163 ft (49.8 m)
Longest span60 ft (18.3 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,841 (2024)
Projected traffic20,056 by 2044
Trucks43%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Is 55 N over Pemiscot Byu built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1984.

What condition is Is 55 N over Pemiscot Byu 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 November 2024.

How much traffic does Is 55 N over Pemiscot Byu carry?

About 10,841 vehicles per day (2024 count), of which roughly 43% are trucks.

How long is Is 55 N over Pemiscot Byu?

The structure is 163 ft (49.8 m) long with a longest span of 60 ft (18.3 m) and a deck 40 ft wide.

Who owns Is 55 N over Pemiscot Byu?

It is owned by the State Highway Agency.