US Bridges

Is 55 S over Mo 74

Fair

Cape Girardeau County, Missouri · S 23 T 30 N R 13 E · Structure no. 6173

Built
1949
76 years old, rebuilt 2016
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
133 ft
3 main spans
Daily traffic
16,909
2024 count
Owner
State
State Highway Agency

About this bridge

Is 55 S over Mo 74 is a steel stringer/multi-beam or girder carrying Is 55 S over Mo 74 in Cape Girardeau County, Missouri. It was built in 1949 and reconstructed in 2016, so it is 76 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 16,909 vehicles a day, roughly 26% of them trucks, projected to reach 32,973 by 2044. The structure is 133 ft (40.5 m) long and 48 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIs 55 S
CrossesMo 74
LocationS 23 T 30 N R 13 E
RouteInterstate 55
Coordinates37.26035, -89.5675
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.3 US tons
Inventory rating55.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span50 ft (15.3 m)
Deck width48 ft (14.5 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,909 (2024)
Projected traffic32,973 by 2044
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 55 S over Mo 74 built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2016.

What condition is Is 55 S over Mo 74 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 2023.

How much traffic does Is 55 S over Mo 74 carry?

About 16,909 vehicles per day (2024 count), of which roughly 26% are trucks.

How long is Is 55 S over Mo 74?

The structure is 133 ft (40.5 m) long with a longest span of 50 ft (15.3 m) and a deck 48 ft wide.

Who owns Is 55 S over Mo 74?

It is owned by the State Highway Agency.