US Bridges

299 ST over S Grand Rvr

Good

Cass County, Missouri · S 12 T 44 N R 33 W · Structure no. 21279

Built
1998
27 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
153 ft
3 main spans
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

299 ST over S Grand Rvr is a concrete continuous slab carrying 299 ST over S Grand Rvr in Cass County, Missouri. It was built in 1998, so it is 27 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.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 160 by 2044. The structure is 153 ft (46.6 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries299 ST
CrossesS Grand Rvr
LocationS 12 T 44 N R 33 W
RouteCounty Highway 299
CountyCass County
StateMissouri
Coordinates38.63054, -94.50681
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating51.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span60 ft (18.3 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic160 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 299 ST over S Grand Rvr built?

It was built in 1998, making it 27 years old in 2025.

What condition is 299 ST over S Grand Rvr 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 March 2023.

How much traffic does 299 ST over S Grand Rvr carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 299 ST over S Grand Rvr?

The structure is 153 ft (46.6 m) long with a longest span of 60 ft (18.3 m) and a deck 25 ft wide.

Who owns 299 ST over S Grand Rvr?

It is owned by the County Highway Agency.