US Bridges

County RD #523 over Br ST Francois CR

Fair

Madison County, Missouri · S 4 T 33 N R 6 E · Structure no. 24645

Built
1985
40 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

County RD #523 over Br ST Francois CR is a concrete culvert carrying County RD #523 over Br ST Francois CR in Madison County, Missouri. It was built in 1985, so it is 40 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 46 by 2044. The structure is 28 ft (8.5 m) long and 16 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty RD #523
CrossesBr ST Francois CR
LocationS 4 T 33 N R 6 E
RouteCounty Highway 523
CountyMadison County
StateMissouri
Coordinates37.57721, -90.38276
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
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 inspectionDecember 2023
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 geometry8: Equal to present desirable criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length28 ft (8.5 m)
Longest span13 ft (4 m)
Deck width16 ft (4.8 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic46 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 County RD #523 over Br ST Francois CR built?

It was built in 1985, making it 40 years old in 2025.

What condition is County RD #523 over Br ST Francois 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 December 2023.

How much traffic does County RD #523 over Br ST Francois CR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD #523 over Br ST Francois CR?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (4 m) and a deck 16 ft wide.

Who owns County RD #523 over Br ST Francois CR?

It is owned by the County Highway Agency.