US Bridges

160th ST over Mill CR

Fair

Nodaway County, Missouri · S 29 T 66 N R 37 W · Structure no. 12252

Built
1930
95 years old, rebuilt 1980
Condition
Fair
inspected December 2024
Type
Truss - Thru
Steel
Length
130 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

160th ST over Mill CR is a steel truss - thru carrying 160th ST over Mill CR in Nodaway County, Missouri. It was built in 1930 and reconstructed in 1980, so it is 95 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 130 ft (39.6 m) long and 18 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
Carries160th ST
CrossesMill CR
LocationS 29 T 66 N R 37 W
RouteCounty Highway 39
CountyNodaway County
StateMissouri
Coordinates40.49276, -95.11994
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating58.5 US tons
Inventory rating42.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadOther
Structure length130 ft (39.6 m)
Longest span70 ft (21.3 m)
Deck width18 ft (5.5 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$607,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 160th ST over Mill CR built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1980.

What condition is 160th ST over Mill CR 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 December 2024.

How much traffic does 160th ST over Mill CR carry?

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

How long is 160th ST over Mill CR?

The structure is 130 ft (39.6 m) long with a longest span of 70 ft (21.3 m) and a deck 18 ft wide.

Who owns 160th ST over Mill CR?

It is owned by the County Highway Agency.