US Bridges

120th Road over Marlowe CR

Good

Worth County, Missouri · S 6 T 66 N R 31 W · Structure no. 28661

Built
2000
25 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
95 ft
1 main span
Daily traffic
30
2024 count
Owner
County
County Highway Agency

About this bridge

120th Road over Marlowe CR is a steel stringer/multi-beam or girder carrying 120th Road over Marlowe CR in Worth County, Missouri. It was built in 2000, so it is 25 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 30 vehicles a day, roughly 10% of them trucks, projected to reach 35 by 2044. The structure is 95 ft (29 m) long and 18 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries120th Road
CrossesMarlowe CR
LocationS 6 T 66 N R 31 W
RouteCounty Highway 207
Coordinates40.54321, -94.44422
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.4 US tons
Inventory rating48.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length95 ft (29 m)
Longest span94 ft (28.7 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2024)
Projected traffic35 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 120th Road over Marlowe CR built?

It was built in 2000, making it 25 years old in 2025.

What condition is 120th Road over Marlowe 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 December 2024.

How much traffic does 120th Road over Marlowe CR carry?

About 30 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 120th Road over Marlowe CR?

The structure is 95 ft (29 m) long with a longest span of 94 ft (28.7 m) and a deck 18 ft wide.

Who owns 120th Road over Marlowe CR?

It is owned by the County Highway Agency.