US Bridges

Ia 7 over Lake Creek

Good

Calhoun County, Iowa · 4.6 Mi. E of E Jct. Ia 4 · Structure no. 000000000016971

Built
1989
36 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
134 ft
3 main spans
Daily traffic
1,250
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 7 over Lake Creek is a concrete continuous slab carrying Ia 7 over Lake Creek in Calhoun County, Iowa. It was built in 1989, so it is 36 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 1,250 vehicles a day, roughly 14% of them trucks, projected to reach 1,250 by 2044. The structure is 134 ft (40.8 m) long and 43 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesIa 7
CrossesLake Creek
Location4.6 Mi. E of E Jct. Ia 4
RouteState Highway 7
CountyCalhoun County
StateIowa
Coordinates42.51718, -94.5888
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 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 rating91.8 US tons
Inventory rating55.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span51 ft (15.5 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,250 (2022)
Projected traffic1,250 by 2044
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Ia 7 over Lake Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Ia 7 over Lake 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 October 2024.

How much traffic does Ia 7 over Lake Creek carry?

About 1,250 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Ia 7 over Lake Creek?

The structure is 134 ft (40.8 m) long with a longest span of 51 ft (15.5 m) and a deck 43 ft wide.

Who owns Ia 7 over Lake Creek?

It is owned by the State Highway Agency.