US Bridges

US 65 over US 18

Good

Cerro Gordo County, Iowa · At Jct. US 18 · Structure no. 000000000601930

Built
1996
29 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
234 ft
2 main spans
Daily traffic
5,800
2023 count
Owner
State
State Highway Agency

About this bridge

US 65 over US 18 is a prestressed concrete stringer/multi-beam or girder carrying US 65 over US 18 in Cerro Gordo County, Iowa. It was built in 1996, so it is 29 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 10% of them trucks, projected to reach 5,800 by 2043. The structure is 234 ft (71.3 m) long and 93 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUS 65
CrossesUS 18
LocationAt Jct. US 18
RouteU.S. Route 65
StateIowa
Coordinates43.10404, -93.20124
Functional classUrban Other Principal 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.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84.4 US tons
Inventory rating48.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length234 ft (71.3 m)
Longest span116 ft (35.4 m)
Deck width93 ft (28.4 m)
Roadway width90 ft (27.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2023)
Projected traffic5,800 by 2043
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 65 over US 18 built?

It was built in 1996, making it 29 years old in 2025.

What condition is US 65 over US 18 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 August 2024.

How much traffic does US 65 over US 18 carry?

About 5,800 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is US 65 over US 18?

The structure is 234 ft (71.3 m) long with a longest span of 116 ft (35.4 m) and a deck 93 ft wide.

Who owns US 65 over US 18?

It is owned by the State Highway Agency.