US Bridges

Or 55 S over S Fk Isle Dudois C

Fair

Ste. Genevieve County, Missouri · S 29 T 39 N R 7 E · Structure no. 2183

Built
1970
55 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
151 ft
3 main spans
Daily traffic
145
2024 count
Owner
State
State Highway Agency

About this bridge

Or 55 S over S Fk Isle Dudois C is a steel continuous stringer/multi-beam or girder carrying Or 55 S over S Fk Isle Dudois C in Ste. Genevieve County, Missouri. It was built in 1970, so it is 55 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 145 vehicles a day, roughly 11% of them trucks, projected to reach 203 by 2044. The structure is 151 ft (46 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOr 55 S
CrossesS Fk Isle Dudois C
LocationS 29 T 39 N R 7 E
RouteState Highway 55
CountySte. Genevieve County
StateMissouri
Coordinates38.06596, -90.28712
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating33.7 US tons
Inventory rating19.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length151 ft (46 m)
Longest span59 ft (18 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic145 (2024)
Projected traffic203 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$751,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 55 S over S Fk Isle Dudois C built?

It was built in 1970, making it 55 years old in 2025.

What condition is Or 55 S over S Fk Isle Dudois C 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 Or 55 S over S Fk Isle Dudois C carry?

About 145 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Or 55 S over S Fk Isle Dudois C?

The structure is 151 ft (46 m) long with a longest span of 59 ft (18 m) and a deck 31 ft wide.

Who owns Or 55 S over S Fk Isle Dudois C?

It is owned by the State Highway Agency.