US Bridges

NW 351 over Fields CR

Good

Henry County, Missouri · S 29 T 42 N R 26 W · Structure no. 31708

Built
2006
19 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete
Length
133 ft
3 main spans
Daily traffic
40
2023 count
Owner
County
County Highway Agency

About this bridge

NW 351 over Fields CR is a concrete slab carrying NW 351 over Fields CR in Henry County, Missouri. It was built in 2006, so it is 19 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 40 vehicles a day, roughly 10% of them trucks, projected to reach 56 by 2043. The structure is 133 ft (40.5 m) long and 25 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesNW 351
CrossesFields CR
LocationS 29 T 42 N R 26 W
RouteCounty Highway 236
CountyHenry County
StateMissouri
Coordinates38.40944, -93.8221
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating47.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span52 ft (15.8 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2023)
Projected traffic56 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 NW 351 over Fields CR built?

It was built in 2006, making it 19 years old in 2025.

What condition is NW 351 over Fields 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 March 2023.

How much traffic does NW 351 over Fields CR carry?

About 40 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NW 351 over Fields CR?

The structure is 133 ft (40.5 m) long with a longest span of 52 ft (15.8 m) and a deck 25 ft wide.

Who owns NW 351 over Fields CR?

It is owned by the County Highway Agency.