US Bridges

185th ST over Long Br

Good

Nodaway County, Missouri · S 9 T 65 N R 34 W · Structure no. 34943

Built
2014
11 years old
Condition
Good
inspected January 2025
Type
Channel Beam
Concrete
Length
41 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

185th ST over Long Br is a concrete channel beam carrying 185th ST over Long Br in Nodaway County, Missouri. It was built in 2014, so it is 11 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 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 41 ft (12.5 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries185th ST
CrossesLong Br
LocationS 9 T 65 N R 34 W
RouteCounty Highway 257
Coordinates40.45242, -94.73636
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
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.5 US tons
Inventory rating36.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width27 ft (8.1 m)
Roadway width25 ft (7.6 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 closed1.2 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 185th ST over Long Br built?

It was built in 2014, making it 11 years old in 2025.

What condition is 185th ST over Long Br 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 185th ST over Long Br carry?

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

How long is 185th ST over Long Br?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 27 ft wide.

Who owns 185th ST over Long Br?

It is owned by the County Highway Agency.