US Bridges

US 61 NB over Flint Creek

Good

Des Moines County, Iowa · 0.6 M N of Memorial Pk RD · Structure no. 000000000023491

Built
2023
2 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
272 ft
3 main spans
Daily traffic
—
2022 count
Owner
State
State Highway Agency

About this bridge

US 61 NB over Flint Creek is a prestressed concrete stringer/multi-beam or girder carrying US 61 NB over Flint Creek in Des Moines County, Iowa. It was built in 2023, so it is 2 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.

No traffic count is recorded. The structure is 272 ft (83 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 61 NB
CrossesFlint Creek
Location0.6 M N of Memorial Pk RD
RouteU.S. Route 9961
StateIowa
Coordinates40.85086, -91.15453
Functional classUrban Local

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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length272 ft (83 m)
Longest span117 ft (35.7 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 61 NB over Flint Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is US 61 NB over Flint Creek 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 December 2024.

How much traffic does US 61 NB over Flint Creek carry?

No traffic count is recorded for this structure.

How long is US 61 NB over Flint Creek?

The structure is 272 ft (83 m) long with a longest span of 117 ft (35.7 m) and a deck 42 ft wide.

Who owns US 61 NB over Flint Creek?

It is owned by the State Highway Agency.