US Bridges

US 18 over Lotts Creek

Good

Kossuth County, Iowa · 1.2 Mi. E of E Jct. Ia 15 · Structure no. 000000000032821

Built
1993
32 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
108 ft
1 main span
Daily traffic
2,770
2022 count
Owner
State
State Highway Agency

About this bridge

US 18 over Lotts Creek is a prestressed concrete stringer/multi-beam or girder carrying US 18 over Lotts Creek in Kossuth County, Iowa. It was built in 1993, so it is 32 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 2,770 vehicles a day, roughly 21% of them trucks, projected to reach 2,770 by 2044. The structure is 108 ft (32.9 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 18
CrossesLotts Creek
Location1.2 Mi. E of E Jct. Ia 15
RouteU.S. Route 18
StateIowa
Coordinates43.08306, -94.39846
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.1 US tons
Inventory rating38.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length108 ft (32.9 m)
Longest span105 ft (32 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,770 (2022)
Projected traffic2,770 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 US 18 over Lotts Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is US 18 over Lotts 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 July 2024.

How much traffic does US 18 over Lotts Creek carry?

About 2,770 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is US 18 over Lotts Creek?

The structure is 108 ft (32.9 m) long with a longest span of 105 ft (32 m) and a deck 47 ft wide.

Who owns US 18 over Lotts Creek?

It is owned by the State Highway Agency.