US Bridges

CO RD SW 1601 over Coon CR

Fair

Johnson County, Missouri · S 29 T 45 N R 28 W · Structure no. 21701

Built
1997
28 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete
Length
30 ft
1 main span
Daily traffic
45
2023 count
Owner
County
County Highway Agency

About this bridge

CO RD SW 1601 over Coon CR is a concrete slab carrying CO RD SW 1601 over Coon CR in Johnson 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 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 45 vehicles a day, roughly 10% of them trucks, projected to reach 72 by 2043. The structure is 30 ft (9.1 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCO RD SW 1601
CrossesCoon CR
LocationS 29 T 45 N R 28 W
RouteCounty Highway 320
CountyJohnson County
StateMissouri
Coordinates38.68018, -94.05247
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadOther
Structure length30 ft (9.1 m)
Longest span26 ft (7.9 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2023)
Projected traffic72 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 CO RD SW 1601 over Coon CR built?

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

What condition is CO RD SW 1601 over Coon 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 December 2024.

How much traffic does CO RD SW 1601 over Coon CR carry?

About 45 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is CO RD SW 1601 over Coon CR?

The structure is 30 ft (9.1 m) long with a longest span of 26 ft (7.9 m) and a deck 23 ft wide.

Who owns CO RD SW 1601 over Coon CR?

It is owned by the County Highway Agency.