US Bridges

County RD 238 over Slough

Good

Cape Girardeau County, Missouri · S 6 T 29 N R 12 E · Structure no. 17350

Built
1920
105 years old, rebuilt 1984
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
145 ft
3 main spans
Daily traffic
110
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 238 over Slough is a prestressed concrete box beam or girders - multiple carrying County RD 238 over Slough in Cape Girardeau County, Missouri. It was built in 1920 and reconstructed in 1984, so it is 105 years old, older 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 110 vehicles a day, roughly 10% of them trucks, projected to reach 176 by 2044. The structure is 145 ft (44.2 m) long and 22 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty RD 238
CrossesSlough
LocationS 6 T 29 N R 12 E
RouteCounty Highway 150
Coordinates37.21992, -89.75938
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating54.6 US tons
Inventory rating24.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length145 ft (44.2 m)
Longest span52 ft (15.8 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2024)
Projected traffic176 by 2044
Trucks10%
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

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 238 over Slough built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1984.

What condition is County RD 238 over Slough 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 January 2024.

How much traffic does County RD 238 over Slough carry?

About 110 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 238 over Slough?

The structure is 145 ft (44.2 m) long with a longest span of 52 ft (15.8 m) and a deck 22 ft wide.

Who owns County RD 238 over Slough?

It is owned by the County Highway Agency.