US Bridges

HWY N over Prairie Br

Fair

Platte County, Missouri · S 14 T 52 N R 35 W · Structure no. 35615

Built
2010
15 years old
Condition
Fair
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
100 ft
3 main spans
Daily traffic
1,486
2024 count
Owner
County
County Highway Agency

About this bridge

HWY N over Prairie Br is a prestressed concrete box beam or girders - single or spread carrying HWY N over Prairie Br in Platte County, Missouri. It was built in 2010, so it is 15 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 1,486 vehicles a day, roughly 10% of them trucks, projected to reach 2,823 by 2044. The structure is 100 ft (30.4 m) long and 26 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesHWY N
CrossesPrairie Br
LocationS 14 T 52 N R 35 W
RouteCounty Highway 0
CountyPlatte County
StateMissouri
Coordinates39.31167, -94.78861
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating53.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length100 ft (30.4 m)
Longest span40 ft (12.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,486 (2024)
Projected traffic2,823 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther Local 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 HWY N over Prairie Br built?

It was built in 2010, making it 15 years old in 2025.

What condition is HWY N over Prairie Br 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 HWY N over Prairie Br carry?

About 1,486 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is HWY N over Prairie Br?

The structure is 100 ft (30.4 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.

Who owns HWY N over Prairie Br?

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