US Bridges

Ia 62 over Mill Creek

Good

Jackson County, Iowa · 0.1 Mi. N of SR D61 · Structure no. 000000000030241

Built
1976
49 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
150 ft
3 main spans
Daily traffic
1,930
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 62 over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying Ia 62 over Mill Creek in Jackson County, Iowa. It was built in 1976, so it is 49 years old, older 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 1,930 vehicles a day, roughly 9% of them trucks, projected to reach 1,930 by 2042. The structure is 150 ft (45.7 m) long and 47 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesIa 62
CrossesMill Creek
Location0.1 Mi. N of SR D61
RouteState Highway 62
StateIowa
Coordinates42.2528, -90.44564
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating77.1 US tons
Inventory rating32.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span51 ft (15.5 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,930 (2022)
Projected traffic1,930 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 62 over Mill Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Ia 62 over Mill 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 March 2023.

How much traffic does Ia 62 over Mill Creek carry?

About 1,930 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Ia 62 over Mill Creek?

The structure is 150 ft (45.7 m) long with a longest span of 51 ft (15.5 m) and a deck 47 ft wide.

Who owns Ia 62 over Mill Creek?

It is owned by the State Highway Agency.