US Bridges

Rt C N over Belleau CR

Good

St. Charles County, Missouri · S 6 T 47 N R 4 E · Structure no. 30309

Built
2004
21 years old
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
651
2024 count
Owner
State
State Highway Agency

About this bridge

Rt C N over Belleau CR is a prestressed concrete slab carrying Rt C N over Belleau CR in St. Charles County, Missouri. It was built in 2004, so it is 21 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 651 vehicles a day, roughly 11% of them trucks, projected to reach 1,269 by 2044. The structure is 53 ft (16.3 m) long and 36 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesRt C N
CrossesBelleau CR
LocationS 6 T 47 N R 4 E
RouteState Highway 0C
Coordinates38.85851, -90.61917
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating41.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length53 ft (16.3 m)
Longest span53 ft (16.3 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic651 (2024)
Projected traffic1,269 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Rt C N over Belleau CR built?

It was built in 2004, making it 21 years old in 2025.

What condition is Rt C N over Belleau CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Rt C N over Belleau CR carry?

About 651 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Rt C N over Belleau CR?

The structure is 53 ft (16.3 m) long with a longest span of 53 ft (16.3 m) and a deck 36 ft wide.

Who owns Rt C N over Belleau CR?

It is owned by the State Highway Agency.