US Bridges

307 ST over New Chnl Grand Rvr

FairPosted for load

Cass County, Missouri · S 2 T 43 N R 32 W · Structure no. 22479

Built
1990
35 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Prestressed Concrete
Length
142 ft
3 main spans
Daily traffic
200
2024 count
Owner
County
County Highway Agency

About this bridge

307 ST over New Chnl Grand Rvr is a prestressed concrete tee beam carrying 307 ST over New Chnl Grand Rvr in Cass County, Missouri. It was built in 1990, so it is 35 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. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 5% of them trucks, projected to reach 320 by 2044. The structure is 142 ft (43.3 m) long and 27 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
Carries307 ST
CrossesNew Chnl Grand Rvr
LocationS 2 T 43 N R 32 W
RouteCounty Highway 358
CountyCass County
StateMissouri
Coordinates38.5611, -94.43206
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length142 ft (43.3 m)
Longest span48 ft (14.6 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2024)
Projected traffic320 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 307 ST over New Chnl Grand Rvr built?

It was built in 1990, making it 35 years old in 2025.

What condition is 307 ST over New Chnl Grand Rvr 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 2023.

How much traffic does 307 ST over New Chnl Grand Rvr carry?

About 200 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 307 ST over New Chnl Grand Rvr?

The structure is 142 ft (43.3 m) long with a longest span of 48 ft (14.6 m) and a deck 27 ft wide.

Who owns 307 ST over New Chnl Grand Rvr?

It is owned by the County Highway Agency.