US Bridges

County RD S-142 over Br of Slagle CR

Fair

Polk County, Missouri · S 20 T 32 N R 22 W · Structure no. 21862

Built
1997
28 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
35 ft
3 main spans
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

County RD S-142 over Br of Slagle CR is a concrete continuous slab carrying County RD S-142 over Br of Slagle CR in Polk County, Missouri. It was built in 1997, so it is 28 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 5 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 29 by 2044. The structure is 35 ft (10.7 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty RD S-142
CrossesBr of Slagle CR
LocationS 20 T 32 N R 22 W
RouteCounty Highway 327
CountyPolk County
StateMissouri
Coordinates37.48281, -93.37164
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.8 US tons
Inventory rating11.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length35 ft (10.7 m)
Longest span11 ft (3.4 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic29 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 S-142 over Br of Slagle CR built?

It was built in 1997, making it 28 years old in 2025.

What condition is County RD S-142 over Br of Slagle 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 April 2024.

How much traffic does County RD S-142 over Br of Slagle CR carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD S-142 over Br of Slagle CR?

The structure is 35 ft (10.7 m) long with a longest span of 11 ft (3.4 m) and a deck 20 ft wide.

Who owns County RD S-142 over Br of Slagle CR?

It is owned by the County Highway Agency.