US Bridges

US 18 WB over Cerro Gordo County Trail

Good

Cerro Gordo County, Iowa · 5.0 Mi. E of Jct. I-35 · Structure no. 000000000606565

Built
1997
28 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
174 ft
3 main spans
Daily traffic
4,450
2022 count
Owner
State
State Highway Agency

About this bridge

US 18 WB over Cerro Gordo County Trail is a prestressed concrete stringer/multi-beam or girder carrying US 18 WB over Cerro Gordo County Trail in Cerro Gordo County, Iowa. It was built in 1997, so it is 28 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 4,450 vehicles a day, roughly 30% of them trucks, projected to reach 4,450 by 2044. The structure is 174 ft (53 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 18 WB
CrossesCerro Gordo County Trail
Location5.0 Mi. E of Jct. I-35
RouteU.S. Route 18
StateIowa
Coordinates43.1055, -93.24823
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.4 US tons
Inventory rating47.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length174 ft (53 m)
Longest span58 ft (17.7 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,450 (2022)
Projected traffic4,450 by 2044
Trucks30%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesPedestrian / bicycle
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 18 WB over Cerro Gordo County Trail built?

It was built in 1997, making it 28 years old in 2025.

What condition is US 18 WB over Cerro Gordo County Trail 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 February 2024.

How much traffic does US 18 WB over Cerro Gordo County Trail carry?

About 4,450 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is US 18 WB over Cerro Gordo County Trail?

The structure is 174 ft (53 m) long with a longest span of 58 ft (17.7 m) and a deck 43 ft wide.

Who owns US 18 WB over Cerro Gordo County Trail?

It is owned by the State Highway Agency.