US Bridges

450 TH Road over Indian CR

Poor

Gentry County, Missouri · S 19 T 64 N R 32 W · Structure no. 12655

Built
1915
110 years old, rebuilt 1988
Condition
Poor
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
2 main spans
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

450 TH Road over Indian CR is a steel stringer/multi-beam or girder carrying 450 TH Road over Indian CR in Gentry County, Missouri. It was built in 1915 and reconstructed in 1988, so it is 110 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 15 vehicles a day, roughly 10% of them trucks, projected to reach 17 by 2044. The structure is 60 ft (18.3 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
Carries450 TH Road
CrossesIndian CR
LocationS 19 T 64 N R 32 W
RouteCounty Highway 16
CountyGentry County
StateMissouri
Coordinates40.32859, -94.53648
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans2
Design loadOther
Structure length60 ft (18.3 m)
Longest span40 ft (12.2 m)
Deck width16 ft (5 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic17 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$309,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 450 TH Road over Indian CR built?

It was built in 1915, making it 110 years old in 2025. It was reconstructed in 1988.

What condition is 450 TH Road over Indian CR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2023.

How much traffic does 450 TH Road over Indian CR carry?

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

How long is 450 TH Road over Indian CR?

The structure is 60 ft (18.3 m) long with a longest span of 40 ft (12.2 m) and a deck 16 ft wide.

Who owns 450 TH Road over Indian CR?

It is owned by the County Highway Agency.