US Bridges

County RD #308 over Greasy CR

PoorPosted for load

Madison County, Missouri · S 24 T 32 N R 7 E · Structure no. 14602

Built
1940
85 years old
Condition
Poor
inspected December 2023
Type
Culvert
Concrete
Length
31 ft
4 main spans
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

County RD #308 over Greasy CR is a concrete culvert carrying County RD #308 over Greasy CR in Madison County, Missouri. It was built in 1940, so it is 85 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 25 vehicles a day, roughly 10% of them trucks, projected to reach 33 by 2044. The structure is 31 ft (9.4 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesCounty RD #308
CrossesGreasy CR
LocationS 24 T 32 N R 7 E
RouteCounty Highway 71
CountyMadison County
StateMissouri
Coordinates37.44779, -90.23343
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating11.9 US tons
Inventory rating7.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length31 ft (9.4 m)
Longest span9 ft (2.7 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic33 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$225,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD #308 over Greasy CR built?

It was built in 1940, making it 85 years old in 2025.

What condition is County RD #308 over Greasy CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does County RD #308 over Greasy CR carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD #308 over Greasy CR?

The structure is 31 ft (9.4 m) long with a longest span of 9 ft (2.7 m) and a deck 12 ft wide.

Who owns County RD #308 over Greasy CR?

It is owned by the County Highway Agency.