US Bridges

Mo 18 E over Millsap Br

Fair

Bates County, Missouri · S 6 T 41 N R 31 W · Structure no. 243

Built
1958
67 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete Continuous
Length
27 ft
2 main spans
Daily traffic
1,256
2024 count
Owner
State
State Highway Agency

About this bridge

Mo 18 E over Millsap Br is a concrete continuous culvert carrying Mo 18 E over Millsap Br in Bates County, Missouri. It was built in 1958, so it is 67 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,256 vehicles a day, roughly 13% of them trucks, projected to reach 1,696 by 2044. The structure is 27 ft (8.1 m) long and 29 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesMo 18 E
CrossesMillsap Br
LocationS 6 T 41 N R 31 W
RouteState Highway 18
CountyBates County
StateMissouri
Coordinates38.39511, -94.39353
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
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 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 rating71.4 US tons
Inventory rating42.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadH 15
Structure length27 ft (8.1 m)
Longest span12 ft (3.7 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,256 (2024)
Projected traffic1,696 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Mo 18 E over Millsap Br built?

It was built in 1958, making it 67 years old in 2025.

What condition is Mo 18 E over Millsap Br in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2024.

How much traffic does Mo 18 E over Millsap Br carry?

About 1,256 vehicles per day (2024 count), of which roughly 13% are trucks.

How long is Mo 18 E over Millsap Br?

The structure is 27 ft (8.1 m) long with a longest span of 12 ft (3.7 m) and a deck 29 ft wide.

Who owns Mo 18 E over Millsap Br?

It is owned by the State Highway Agency.