US Bridges

Grothe RD S over Br of Mccoy CR

Fair

St. Charles County, Missouri · S 735 T 47 N R 1 E · Structure no. 3793

Built
1987
38 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
702
2024 count
Owner
State
State Highway Agency

About this bridge

Grothe RD S over Br of Mccoy CR is a concrete culvert carrying Grothe RD S over Br of Mccoy CR in St. Charles County, Missouri. It was built in 1987, so it is 38 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 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 702 vehicles a day, roughly 5% of them trucks, projected to reach 1,369 by 2044. The structure is 33 ft (10 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGrothe RD S
CrossesBr of Mccoy CR
LocationS 735 T 47 N R 1 E
RouteCity Street 0
CountySt. Charles County
StateMissouri
Coordinates38.84358, -90.86118
Functional classUrban 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating56.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length33 ft (10 m)
Longest span13 ft (4 m)
Deck width39 ft (11.8 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic702 (2024)
Projected traffic1,369 by 2044
Trucks5%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Grothe RD S over Br of Mccoy CR built?

It was built in 1987, making it 38 years old in 2025.

What condition is Grothe RD S over Br of Mccoy 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 November 2023.

How much traffic does Grothe RD S over Br of Mccoy CR carry?

About 702 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Grothe RD S over Br of Mccoy CR?

The structure is 33 ft (10 m) long with a longest span of 13 ft (4 m) and a deck 39 ft wide.

Who owns Grothe RD S over Br of Mccoy CR?

It is owned by the State Highway Agency.