US Bridges

Is 57 S over Mississippi Rvr

Fair

Mississippi County, Missouri · S 33 T 28 N R 15 E · Structure no. 1684

Built
1976
49 years old
Condition
Fair
inspected March 2024
Type
Truss - Thru
Steel Continuous
Length
4,091 ft
3 main spans
Daily traffic
11,453
2024 count
Owner
State
State Highway Agency

About this bridge

Is 57 S over Mississippi Rvr is a steel continuous truss - thru carrying Is 57 S over Mississippi Rvr in Mississippi County, Missouri. It was built in 1976, so it is 49 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 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 11,453 vehicles a day, roughly 69% of them trucks, projected to reach 20,043 by 2044. The structure is 4,091 ft (1,246.8 m) long and 63 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesIs 57 S
CrossesMississippi Rvr
LocationS 33 T 28 N R 15 E
RouteInterstate 57
CountyMississippi County
StateMissouri
Coordinates37.02224, -89.21237
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 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 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 rating64.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+16 approach)
Design loadHS 20
Structure length4,091 ft (1,246.8 m)
Longest span821 ft (250.3 m)
Deck width63 ft (19.3 m)
Roadway width61 ft (18.7 m)
Vertical clearance over deck20 ft (6.1 m)

Traffic and service

Average daily traffic11,453 (2024)
Projected traffic20,043 by 2044
Trucks69%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Is 57 S over Mississippi Rvr built?

It was built in 1976, making it 49 years old in 2025.

What condition is Is 57 S over Mississippi Rvr 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 March 2024.

How much traffic does Is 57 S over Mississippi Rvr carry?

About 11,453 vehicles per day (2024 count), of which roughly 69% are trucks.

How long is Is 57 S over Mississippi Rvr?

The structure is 4,091 ft (1,246.8 m) long with a longest span of 821 ft (250.3 m) and a deck 63 ft wide.

Who owns Is 57 S over Mississippi Rvr?

It is owned by the State Highway Agency.