US Bridges

S.E. 85th RD over Br of Platte Rvr

FairClosed to traffic

Buchanan County, Missouri · S 16 T 57 N R 34 W · Structure no. 13907

Built
1960
65 years old, rebuilt 1973
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
23 ft
1 main span
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

S.E. 85th RD over Br of Platte Rvr is a steel stringer/multi-beam or girder carrying S.E. 85th RD over Br of Platte Rvr in Buchanan County, Missouri. It was built in 1960 and reconstructed in 1973, so it is 65 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. Its operating status is: closed to all traffic.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 115 by 2044. The structure is 23 ft (7 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS.E. 85th RD
CrossesBr of Platte Rvr
LocationS 16 T 57 N R 34 W
RouteCounty Highway 51
CountyBuchanan County
StateMissouri
Coordinates39.76212, -94.71175
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.
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 2023
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic115 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 byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$239,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S.E. 85th RD over Br of Platte Rvr built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1973.

What condition is S.E. 85th RD over Br of Platte Rvr 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 2023.

How much traffic does S.E. 85th RD over Br of Platte Rvr carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is S.E. 85th RD over Br of Platte Rvr?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 20 ft wide.

Who owns S.E. 85th RD over Br of Platte Rvr?

It is owned by the County Highway Agency.