US Bridges

County RD S-60 over Trib of Lit Sac

GoodPosted for load

Polk County, Missouri · S 24 T 32 N R 24 W · Structure no. 21024

Built
1994
31 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
35 ft
2 main spans
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

County RD S-60 over Trib of Lit Sac is a concrete continuous slab carrying County RD S-60 over Trib of Lit Sac in Polk County, Missouri. It was built in 1994, so it is 31 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 30 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2044. The structure is 35 ft (10.7 m) long and 19 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCounty RD S-60
CrossesTrib of Lit Sac
LocationS 24 T 32 N R 24 W
RouteCounty Highway 285
Coordinates37.49909, -93.52555
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating19.8 US tons
Inventory rating6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length35 ft (10.7 m)
Longest span15 ft (4.7 m)
Deck width19 ft (5.7 m)
Roadway width19 ft (5.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic44 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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$311,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD S-60 over Trib of Lit Sac built?

It was built in 1994, making it 31 years old in 2025.

What condition is County RD S-60 over Trib of Lit Sac 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 April 2024.

How much traffic does County RD S-60 over Trib of Lit Sac carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD S-60 over Trib of Lit Sac?

The structure is 35 ft (10.7 m) long with a longest span of 15 ft (4.7 m) and a deck 19 ft wide.

Who owns County RD S-60 over Trib of Lit Sac?

It is owned by the County Highway Agency.