US Bridges

County RD S-60 over Trib of Lit Sac

Fair

Polk County, Missouri · S 24 T 32 N R 24 W · Structure no. 21022

Built
1994
31 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete Continuous
Length
77 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 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 44 by 2044. The structure is 77 ft (23.5 m) long and 18 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty RD S-60
CrossesTrib of Lit Sac
LocationS 24 T 32 N R 24 W
RouteCounty Highway 285
CountyPolk County
StateMissouri
Coordinates37.5018, -93.52502
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating14.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadOther
Structure length77 ft (23.5 m)
Longest span35 ft (10.7 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 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 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 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 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-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 77 ft (23.5 m) long with a longest span of 35 ft (10.7 m) and a deck 18 ft wide.

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

It is owned by the County Highway Agency.