US Bridges

450th Road over Br of Island CR

Good

Gentry County, Missouri · S 30 T 62 N R 32 W · Structure no. 35312

Built
2016
9 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
35
2024 count
Owner
County
County Highway Agency

About this bridge

450th Road over Br of Island CR is a steel stringer/multi-beam or girder carrying 450th Road over Br of Island CR in Gentry County, Missouri. It was built in 2016, so it is 9 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 35 vehicles a day, roughly 10% of them trucks, projected to reach 40 by 2044. The structure is 63 ft (19.2 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries450th Road
CrossesBr of Island CR
LocationS 30 T 62 N R 32 W
RouteCounty Highway 332
CountyGentry County
StateMissouri
Coordinates40.15211, -94.53931
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span58 ft (17.7 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2024)
Projected traffic40 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway 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 450th Road over Br of Island CR built?

It was built in 2016, making it 9 years old in 2025.

What condition is 450th Road over Br of Island CR 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 450th Road over Br of Island CR carry?

About 35 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 450th Road over Br of Island CR?

The structure is 63 ft (19.2 m) long with a longest span of 58 ft (17.7 m) and a deck 26 ft wide.

Who owns 450th Road over Br of Island CR?

It is owned by the County Highway Agency.