US Bridges

NW Lake Site RD over Lost CR

Fair

DeKalb County, Missouri · S 16 T 59 N R 31 W · Structure no. 20157

Built
1984
41 years old
Condition
Fair
inspected January 2025
Type
Girder and Floorbeam System
Steel
Length
65 ft
1 main span
Daily traffic
20
2024 count
Owner
County
County Highway Agency

About this bridge

NW Lake Site RD over Lost CR is a steel girder and floorbeam system carrying NW Lake Site RD over Lost CR in DeKalb County, Missouri. It was built in 1984, so it is 41 years old, younger 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 6 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 20 vehicles a day, roughly 10% of them trucks, projected to reach 23 by 2044. The structure is 65 ft (19.8 m) long and 16 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNW Lake Site RD
CrossesLost CR
LocationS 16 T 59 N R 31 W
RouteCounty Highway 249
CountyDeKalb County
StateMissouri
Coordinates39.93083, -94.3757
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating35.7 US tons
Inventory rating20.8 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckWood or timber
Main spans1
Design loadOther
Structure length65 ft (19.8 m)
Longest span62 ft (18.9 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic23 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 NW Lake Site RD over Lost CR built?

It was built in 1984, making it 41 years old in 2025.

What condition is NW Lake Site RD over Lost 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 January 2025.

How much traffic does NW Lake Site RD over Lost CR carry?

About 20 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is NW Lake Site RD over Lost CR?

The structure is 65 ft (19.8 m) long with a longest span of 62 ft (18.9 m) and a deck 16 ft wide.

Who owns NW Lake Site RD over Lost CR?

It is owned by the County Highway Agency.