US Bridges

NW 120th LN over Drywood CR

Good

Barton County, Missouri · S 25 T 33 N R 33 W · Structure no. 12567

Built
1977
48 years old
Condition
Good
inspected March 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
120
2023 count
Owner
County
County Highway Agency

About this bridge

NW 120th LN over Drywood CR is a prestressed concrete continuous tee beam carrying NW 120th LN over Drywood CR in Barton County, Missouri. It was built in 1977, so it is 48 years old, older 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 120 vehicles a day, roughly 10% of them trucks, projected to reach 168 by 2043. The structure is 130 ft (39.6 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNW 120th LN
CrossesDrywood CR
LocationS 25 T 33 N R 33 W
RouteCounty Highway 14
CountyBarton County
StateMissouri
Coordinates37.58493, -94.51367
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length130 ft (39.6 m)
Longest span42 ft (12.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2023)
Projected traffic168 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 120th LN over Drywood CR built?

It was built in 1977, making it 48 years old in 2025.

What condition is NW 120th LN over Drywood 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 120th LN over Drywood CR carry?

About 120 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is NW 120th LN over Drywood CR?

The structure is 130 ft (39.6 m) long with a longest span of 42 ft (12.8 m) and a deck 26 ft wide.

Who owns NW 120th LN over Drywood CR?

It is owned by the County Highway Agency.