US Bridges

County RD 297 over Unnamed CR

Good

Lewis County, Missouri · S 35 T 60 N R 7 W · Structure no. 36196

Built
2019
6 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
75
2024 count
Owner
County
County Highway Agency

About this bridge

County RD 297 over Unnamed CR is a concrete slab carrying County RD 297 over Unnamed CR in Lewis County, Missouri. It was built in 2019, so it is 6 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 75 vehicles a day, roughly 10% of them trucks, projected to reach 94 by 2044. The structure is 33 ft (10.1 m) long and 23 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCounty RD 297
CrossesUnnamed CR
LocationS 35 T 60 N R 7 W
RouteCounty Highway 297
CountyLewis County
StateMissouri
Coordinates39.95583, -91.64972
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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.5 US tons
Inventory rating38.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span32 ft (9.8 m)
Deck width23 ft (7 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2024)
Projected traffic94 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 297 over Unnamed CR built?

It was built in 2019, making it 6 years old in 2025.

What condition is County RD 297 over Unnamed CR 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 January 2024.

How much traffic does County RD 297 over Unnamed CR carry?

About 75 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is County RD 297 over Unnamed CR?

The structure is 33 ft (10.1 m) long with a longest span of 32 ft (9.8 m) and a deck 23 ft wide.

Who owns County RD 297 over Unnamed CR?

It is owned by the County Highway Agency.