US Bridges

Is 55 S over SW Ramsey CR

Fair

Scott County, Missouri · S 29 T 29 N R 14 E · Structure no. 671

Built
1962
63 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
26,540
2024 count
Owner
State
State Highway Agency

About this bridge

Is 55 S over SW Ramsey CR is a concrete continuous culvert carrying Is 55 S over SW Ramsey CR in Scott County, Missouri. It was built in 1962, 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 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 26,540 vehicles a day, roughly 31% of them trucks, projected to reach 50,426 by 2044. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIs 55 S
CrossesSW Ramsey CR
LocationS 29 T 29 N R 14 E
RouteInterstate 55
CountyScott County
StateMissouri
Coordinates37.15536, -89.53732
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating69.4 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,540 (2024)
Projected traffic50,426 by 2044
Trucks31%
Lanes on structure4
Traffic directionTwo-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 S over SW Ramsey CR built?

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

What condition is Is 55 S over SW Ramsey CR 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 January 2025.

How much traffic does Is 55 S over SW Ramsey CR carry?

About 26,540 vehicles per day (2024 count), of which roughly 31% are trucks.

How long is Is 55 S over SW Ramsey CR?

The structure is 25 ft (7.7 m) long with a longest span of 11 ft (3.4 m).

Who owns Is 55 S over SW Ramsey CR?

It is owned by the State Highway Agency.