US Bridges

County RD 518 over Blue Ditch

Fair

Scott County, Missouri · S 11 T 27 N R 14 E · Structure no. 33800

Built
2008
17 years old
Condition
Fair
inspected January 2025
Type
Culvert
Steel
Length
26 ft
4 main spans
Daily traffic
16
2023 count
Owner
County
County Highway Agency

About this bridge

County RD 518 over Blue Ditch is a steel culvert carrying County RD 518 over Blue Ditch in Scott County, Missouri. It was built in 2008, so it is 17 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 16 vehicles a day, roughly 10% of them trucks, projected to reach 22 by 2043. The structure is 26 ft (7.9 m) long and 22 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesCounty RD 518
CrossesBlue Ditch
LocationS 11 T 27 N R 14 E
RouteCounty Highway 518
CountyScott County
StateMissouri
Coordinates36.99567, -89.50947
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span5 ft (1.5 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (2023)
Projected traffic22 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 518 over Blue Ditch built?

It was built in 2008, making it 17 years old in 2025.

What condition is County RD 518 over Blue Ditch 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 January 2025.

How much traffic does County RD 518 over Blue Ditch carry?

About 16 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County RD 518 over Blue Ditch?

The structure is 26 ft (7.9 m) long with a longest span of 5 ft (1.5 m) and a deck 22 ft wide.

Who owns County RD 518 over Blue Ditch?

It is owned by the County Highway Agency.