US Bridges

SB US 61 over Lost Creek

Good

Lee County, Iowa · 2.4 Mi. S of Jct. Ia 16 · Structure no. 000000000601110

Built
1992
33 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
204 ft
3 main spans
Daily traffic
4,550
2022 count
Owner
State
State Highway Agency

About this bridge

SB US 61 over Lost Creek is a prestressed concrete stringer/multi-beam or girder carrying SB US 61 over Lost Creek in Lee County, Iowa. It was built in 1992, so it is 33 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 4,550 vehicles a day, roughly 11% of them trucks, projected to reach 4,550 by 2043. The structure is 204 ft (62.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB US 61
CrossesLost Creek
Location2.4 Mi. S of Jct. Ia 16
RouteU.S. Route 61
StateIowa
Coordinates40.69428, -91.24662
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.3 US tons
Inventory rating32.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length204 ft (62.2 m)
Longest span82 ft (25 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,550 (2022)
Projected traffic4,550 by 2043
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 SB US 61 over Lost Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is SB US 61 over Lost 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 September 2023.

How much traffic does SB US 61 over Lost Creek carry?

About 4,550 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is SB US 61 over Lost Creek?

The structure is 204 ft (62.2 m) long with a longest span of 82 ft (25 m) and a deck 43 ft wide.

Who owns SB US 61 over Lost Creek?

It is owned by the State Highway Agency.