US Bridges

120th ST over Br W Locust CR

Good

Putnam County, Missouri · S 35 T 67 N R 21 W · Structure no. 34276

Built
2012
13 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
50 ft
1 main span
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

120th ST over Br W Locust CR is a steel stringer/multi-beam or girder carrying 120th ST over Br W Locust CR in Putnam County, Missouri. It was built in 2012, so it is 13 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 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 15 vehicles a day, roughly 10% of them trucks, projected to reach 17 by 2044. The structure is 50 ft (15.2 m) long and 18 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries120th ST
CrossesBr W Locust CR
LocationS 35 T 67 N R 21 W
RouteCounty Highway 120
CountyPutnam County
StateMissouri
Coordinates40.55819, -93.22742
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.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating56.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span48 ft (14.7 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic17 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 120th ST over Br W Locust CR built?

It was built in 2012, making it 13 years old in 2025.

What condition is 120th ST over Br W Locust 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 2025.

How much traffic does 120th ST over Br W Locust CR carry?

About 15 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 120th ST over Br W Locust CR?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.7 m) and a deck 18 ft wide.

Who owns 120th ST over Br W Locust CR?

It is owned by the County Highway Agency.