US Bridges

US 52 over Fork Granger Creek

Good

Dubuque County, Iowa · 0.9 Mi. S of Jct. US 61 · Structure no. 000000000023921

Built
1997
28 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
7,000
2022 count
Owner
State
State Highway Agency

About this bridge

US 52 over Fork Granger Creek is a concrete continuous culvert carrying US 52 over Fork Granger Creek in Dubuque 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 7,000 vehicles a day, roughly 7% of them trucks, projected to reach 7,000 by 2044. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 52
CrossesFork Granger Creek
Location0.9 Mi. S of Jct. US 61
RouteU.S. Route 52
StateIowa
Coordinates42.45434, -90.65736
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating56.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2022)
Projected traffic7,000 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 52 over Fork Granger Creek built?

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

What condition is US 52 over Fork Granger 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 April 2024.

How much traffic does US 52 over Fork Granger Creek carry?

About 7,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is US 52 over Fork Granger Creek?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns US 52 over Fork Granger Creek?

It is owned by the State Highway Agency.