US Bridges

405 TH ST over Grand Rvr

Fair

Gentry County, Missouri · S 35 T 62 N R 31 W · Structure no. 24119

Built
1992
33 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
273 ft
3 main spans
Daily traffic
140
2024 count
Owner
County
County Highway Agency

About this bridge

405 TH ST over Grand Rvr is a prestressed concrete continuous stringer/multi-beam or girder carrying 405 TH ST over Grand Rvr in Gentry County, Missouri. It was built in 1992, so it is 33 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 5 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 140 vehicles a day, roughly 10% of them trucks, projected to reach 161 by 2044. The structure is 273 ft (83.2 m) long and 27 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
Carries405 TH ST
CrossesGrand Rvr
LocationS 35 T 62 N R 31 W
RouteCounty Highway 459
CountyGentry County
StateMissouri
Coordinates40.13181, -94.3501
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length273 ft (83.2 m)
Longest span90 ft (27.4 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2024)
Projected traffic161 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 405 TH ST over Grand Rvr built?

It was built in 1992, making it 33 years old in 2025.

What condition is 405 TH ST over Grand 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 March 2023.

How much traffic does 405 TH ST over Grand Rvr carry?

About 140 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 405 TH ST over Grand Rvr?

The structure is 273 ft (83.2 m) long with a longest span of 90 ft (27.4 m) and a deck 27 ft wide.

Who owns 405 TH ST over Grand Rvr?

It is owned by the County Highway Agency.