US Bridges

FM over Weldon River

Good

Decatur County, Iowa · 068241701 · Structure no. 000000000136891

Built
2003
22 years old
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
252 ft
3 main spans
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Weldon River is a prestressed concrete stringer/multi-beam or girder carrying FM over Weldon River in Decatur County, Iowa. It was built in 2003, so it is 22 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, projected to reach 10 by 2043. The structure is 252 ft (76.8 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM
CrossesWeldon River
Location068241701
RouteCounty Highway 0
StateIowa
Coordinates40.69612, -93.63619
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.3 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length252 ft (76.8 m)
Longest span107 ft (32.6 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2043
Trucks0%
Lanes on structure2
Traffic directionOne-lane bridge for two-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 statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Weldon River built?

It was built in 2003, making it 22 years old in 2025.

What condition is FM over Weldon River 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 November 2022.

How much traffic does FM over Weldon River carry?

About 10 vehicles per day (2022 count).

How long is FM over Weldon River?

The structure is 252 ft (76.8 m) long with a longest span of 107 ft (32.6 m) and a deck 33 ft wide.

Who owns FM over Weldon River?

It is owned by the County Highway Agency.