US Bridges

Rt M S over Is 55

Fair

Ste. Genevieve County, Missouri · S 3060 T 37 N R 9 E · Structure no. 2089

Built
1969
56 years old, rebuilt 1984
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
246 ft
2 main spans
Daily traffic
2,490
2024 count
Owner
State
State Highway Agency

About this bridge

Rt M S over Is 55 is a steel continuous stringer/multi-beam or girder carrying Rt M S over Is 55 in Ste. Genevieve County, Missouri. It was built in 1969 and reconstructed in 1984, so it is 56 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 2,490 vehicles a day, roughly 11% of them trucks, projected to reach 3,486 by 2044. The structure is 246 ft (75 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesRt M S
CrossesIs 55
LocationS 3060 T 37 N R 9 E
RouteState Highway 0M
CountySte. Genevieve County
StateMissouri
Coordinates37.87518, -90.03376
Functional classRural Major Collector

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.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.7 US tons
Inventory rating19.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 15
Structure length246 ft (75 m)
Longest span86 ft (26.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,490 (2024)
Projected traffic3,486 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rt M S over Is 55 built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1984.

What condition is Rt M S over Is 55 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 October 2024.

How much traffic does Rt M S over Is 55 carry?

About 2,490 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt M S over Is 55?

The structure is 246 ft (75 m) long with a longest span of 86 ft (26.2 m) and a deck 31 ft wide.

Who owns Rt M S over Is 55?

It is owned by the State Highway Agency.