US Bridges

NW 45th LN over Little Dry Wood

Good

Barton County, Missouri · S 19 T 33 N R 31 W · Structure no. 36533

Built
2021
4 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
75
2023 count
Owner
County
County Highway Agency

About this bridge

NW 45th LN over Little Dry Wood is a prestressed concrete box beam or girders - single or spread carrying NW 45th LN over Little Dry Wood in Barton County, Missouri. It was built in 2021, so it is 4 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 9 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 105 by 2043. The structure is 70 ft (21.3 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesNW 45th LN
CrossesLittle Dry Wood
LocationS 19 T 33 N R 31 W
RouteCounty Highway 30
Coordinates37.59051, -94.37556
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.5 US tons
Inventory rating52.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span67 ft (20.3 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic75 (2023)
Projected traffic105 by 2043
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 NW 45th LN over Little Dry Wood built?

It was built in 2021, making it 4 years old in 2025.

What condition is NW 45th LN over Little Dry Wood 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 45th LN over Little Dry Wood carry?

About 75 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NW 45th LN over Little Dry Wood?

The structure is 70 ft (21.3 m) long with a longest span of 67 ft (20.3 m) and a deck 24 ft wide.

Who owns NW 45th LN over Little Dry Wood?

It is owned by the County Highway Agency.