US Bridges

405 TH ST over Br of Stillhouse B

Good

Gentry County, Missouri · S 35 T 62 N R 31 W · Structure no. 29297

Built
2001
24 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
45 ft
1 main span
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

405 TH ST over Br of Stillhouse B is a steel stringer/multi-beam or girder carrying 405 TH ST over Br of Stillhouse B in Gentry County, Missouri. It was built in 2001, so it is 24 years old, younger than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15 vehicles a day, roughly 10% of them trucks, projected to reach 17 by 2044. The structure is 45 ft (13.7 m) long and 18 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries405 TH ST
CrossesBr of Stillhouse B
LocationS 35 T 62 N R 31 W
RouteCounty Highway 450
CountyGentry County
StateMissouri
Coordinates40.13339, -94.3615
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating81.4 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length45 ft (13.7 m)
Longest span43 ft (13.1 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic17 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-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 405 TH ST over Br of Stillhouse B built?

It was built in 2001, making it 24 years old in 2025.

What condition is 405 TH ST over Br of Stillhouse B in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does 405 TH ST over Br of Stillhouse B carry?

About 15 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 405 TH ST over Br of Stillhouse B?

The structure is 45 ft (13.7 m) long with a longest span of 43 ft (13.1 m) and a deck 18 ft wide.

Who owns 405 TH ST over Br of Stillhouse B?

It is owned by the County Highway Agency.