US Bridges

580 TH Road over Weldon Br

Good

Gentry County, Missouri · S 8 T 63 N R 30 W · Structure no. 17520

Built
1996
29 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
58 ft
1 main span
Daily traffic
25
2024 count
Owner
County
County Highway Agency

About this bridge

580 TH Road over Weldon Br is a steel stringer/multi-beam or girder carrying 580 TH Road over Weldon Br in Gentry County, Missouri. It was built in 1996, so it is 29 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 25 vehicles a day, roughly 10% of them trucks, projected to reach 29 by 2044. The structure is 58 ft (17.7 m) long and 18 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
Carries580 TH Road
CrossesWeldon Br
LocationS 8 T 63 N R 30 W
RouteCounty Highway 155
CountyGentry County
StateMissouri
Coordinates40.28343, -94.29172
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 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 statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating56.5 US tons
Inventory rating33.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length58 ft (17.7 m)
Longest span58 ft (17.7 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic29 by 2044
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 580 TH Road over Weldon Br built?

It was built in 1996, making it 29 years old in 2025.

What condition is 580 TH Road over Weldon Br 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 January 2023.

How much traffic does 580 TH Road over Weldon Br carry?

About 25 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is 580 TH Road over Weldon Br?

The structure is 58 ft (17.7 m) long with a longest span of 58 ft (17.7 m) and a deck 18 ft wide.

Who owns 580 TH Road over Weldon Br?

It is owned by the County Highway Agency.