US Bridges

N Bluff RD over Br of Bear CR

Fair

Platte County, Missouri · S 3 T 53 N R 36 W · Structure no. 17523

Built
1925
100 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
120
2024 count
Owner
County
County Highway Agency

About this bridge

N Bluff RD over Br of Bear CR is a concrete culvert carrying N Bluff RD over Br of Bear CR in Platte County, Missouri. It was built in 1925, so it is 100 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 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 120 vehicles a day, roughly 10% of them trucks, projected to reach 222 by 2044. The structure is 22 ft (6.7 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesN Bluff RD
CrossesBr of Bear CR
LocationS 3 T 53 N R 36 W
RouteCounty Highway 155
CountyPlatte County
StateMissouri
Coordinates39.42819, -94.92299
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.6 US tons
Inventory rating17.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadOther
Structure length22 ft (6.7 m)
Longest span11 ft (3.4 m)
Deck width20 ft (6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120 (2024)
Projected traffic222 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther Local Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$153,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was N Bluff RD over Br of Bear CR built?

It was built in 1925, making it 100 years old in 2025.

What condition is N Bluff RD over Br of Bear 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 April 2024.

How much traffic does N Bluff RD over Br of Bear CR carry?

About 120 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is N Bluff RD over Br of Bear CR?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.4 m) and a deck 20 ft wide.

Who owns N Bluff RD over Br of Bear CR?

It is owned by the County Highway Agency and maintained by the Other Local Agency.