US Bridges

Ia 188 over US 218

Good

Bremer County, Iowa · At Jct. US 218 · Structure no. 000000000608050

Built
2002
23 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
305 ft
4 main spans
Daily traffic
1,090
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 188 over US 218 is a prestressed concrete stringer/multi-beam or girder carrying Ia 188 over US 218 in Bremer County, Iowa. It was built in 2002, so it is 23 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 1,090 vehicles a day, roughly 13% of them trucks, projected to reach 1,090 by 2044. The structure is 305 ft (93 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesIa 188
CrossesUS 218
LocationAt Jct. US 218
RouteState Highway 188
StateIowa
Coordinates42.84749, -92.54522
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.7 US tons
Inventory rating38.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length305 ft (93 m)
Longest span107 ft (32.6 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,090 (2022)
Projected traffic1,090 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ia 188 over US 218 built?

It was built in 2002, making it 23 years old in 2025.

What condition is Ia 188 over US 218 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 January 2024.

How much traffic does Ia 188 over US 218 carry?

About 1,090 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Ia 188 over US 218?

The structure is 305 ft (93 m) long with a longest span of 107 ft (32.6 m) and a deck 43 ft wide.

Who owns Ia 188 over US 218?

It is owned by the State Highway Agency.