US Bridges

Ia 137 over Des Moines River

Good

Wapello County, Iowa · 0.1 Mi. N of Jct. SR T-61 · Structure no. 000000000050811

Built
2006
19 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,460 ft
11 main spans
Daily traffic
5,800
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 137 over Des Moines River is a prestressed concrete stringer/multi-beam or girder carrying Ia 137 over Des Moines River in Wapello County, Iowa. It was built in 2006, so it is 19 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 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 5,800 vehicles a day, roughly 19% of them trucks, projected to reach 5,800 by 2042. The structure is 1,460 ft (445 m) long and 58 ft wide. If it were closed, the detour would be 44.1 mi (71 km).

CarriesIa 137
CrossesDes Moines River
Location0.1 Mi. N of Jct. SR T-61
RouteState Highway 137
StateIowa
Coordinates41.14756, -92.63931
Functional classRural Minor Arterial

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 inspectionOctober 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.5 US tons
Inventory rating48.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length1,460 ft (445 m)
Longest span141 ft (43 m)
Deck width58 ft (17.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2022)
Projected traffic5,800 by 2042
Trucks19%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.1 mi (71 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ia 137 over Des Moines River built?

It was built in 2006, making it 19 years old in 2025.

What condition is Ia 137 over Des Moines 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 October 2024.

How much traffic does Ia 137 over Des Moines River carry?

About 5,800 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is Ia 137 over Des Moines River?

The structure is 1,460 ft (445 m) long with a longest span of 141 ft (43 m) and a deck 58 ft wide.

Who owns Ia 137 over Des Moines River?

It is owned by the State Highway Agency.