US Bridges

320th RD over Bear CR

FairPosted for load

Saline County, Missouri · S 32 T 52 N R 19 W · Structure no. 24242

Built
1974
51 years old
Condition
Fair
inspected March 2024
Type
Channel Beam
Concrete
Length
56 ft
2 main spans
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

320th RD over Bear CR is a concrete channel beam carrying 320th RD over Bear CR in Saline County, Missouri. It was built in 1974, so it is 51 years old, older 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. Its operating status is: posted for load restriction.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 39 by 2044. The structure is 56 ft (17.1 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries320th RD
CrossesBear CR
LocationS 32 T 52 N R 19 W
RouteCounty Highway 468
CountySaline County
StateMissouri
Coordinates39.25107, -93.00926
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 10
Structure length56 ft (17.1 m)
Longest span28 ft (8.5 m)
Deck width16 ft (5 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic39 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 byOther Local 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 320th RD over Bear CR built?

It was built in 1974, making it 51 years old in 2025.

What condition is 320th RD over Bear 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 March 2024.

How much traffic does 320th RD over Bear CR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 320th RD over Bear CR?

The structure is 56 ft (17.1 m) long with a longest span of 28 ft (8.5 m) and a deck 16 ft wide.

Who owns 320th RD over Bear CR?

It is owned by the County Highway Agency and maintained by the Other Local Agency.