US Bridges

Point Prairie RD over Sams CR

FairPosted for load

St. Charles County, Missouri · S 33 T 47 N R 1 E · Structure no. 21990

Built
1988
37 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
97 ft
3 main spans
Daily traffic
898
2024 count
Owner
County
County Highway Agency

About this bridge

Point Prairie RD over Sams CR is a prestressed concrete tee beam carrying Point Prairie RD over Sams CR in St. Charles County, Missouri. It was built in 1988, so it is 37 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 898 vehicles a day, roughly 5% of them trucks, projected to reach 1,392 by 2044. The structure is 97 ft (29.6 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesPoint Prairie RD
CrossesSams CR
LocationS 33 T 47 N R 1 E
RouteCounty Highway 344
CountySt. Charles County
StateMissouri
Coordinates38.78539, -90.91062
Functional classUrban 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.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span31 ft (9.4 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic898 (2024)
Projected traffic1,392 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Point Prairie RD over Sams CR built?

It was built in 1988, making it 37 years old in 2025.

What condition is Point Prairie RD over Sams 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 February 2024.

How much traffic does Point Prairie RD over Sams CR carry?

About 898 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Point Prairie RD over Sams CR?

The structure is 97 ft (29.6 m) long with a longest span of 31 ft (9.4 m) and a deck 33 ft wide.

Who owns Point Prairie RD over Sams CR?

It is owned by the County Highway Agency.