US Bridges

NW Dillon RD over Mill Crk

Good

Caldwell County, Missouri · S 8 T 56 N R 28 W · Structure no. 37425

Built
2025
0 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Multiple
Concrete
Length
77 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

NW Dillon RD over Mill Crk is a concrete box beam or girders - multiple carrying NW Dillon RD over Mill Crk in Caldwell County, Missouri. It was built in 2025, so it is 0 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. Its operating status is: new structure not yet open to traffic.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 77 ft (23.4 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNW Dillon RD
CrossesMill Crk
LocationS 8 T 56 N R 28 W
RouteCounty Highway 364
Coordinates39.68416, -94.06185
Functional classRural Minor Collector

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 protection9 ExcellentNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusNew structure not yet open to traffic
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.3 US tons
Inventory rating70.4 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length77 ft (23.4 m)
Longest span74 ft (22.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 NW Dillon RD over Mill Crk built?

It was built in 2025, making it 0 years old in 2025.

What condition is NW Dillon RD over Mill Crk 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 NW Dillon RD over Mill Crk carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is NW Dillon RD over Mill Crk?

The structure is 77 ft (23.4 m) long with a longest span of 74 ft (22.7 m) and a deck 24 ft wide.

Who owns NW Dillon RD over Mill Crk?

It is owned by the County Highway Agency.