US Bridges

7th St-Y 13 over US 20 & 52

Good

Dubuque County, Iowa · 0.5 Mi. W of Jct. SR Y13 · Structure no. 000000000605835

Built
1989
36 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
431 ft
4 main spans
Daily traffic
1,089
2022 count
Owner
State
State Highway Agency

About this bridge

7th St-Y 13 over US 20 & 52 is a steel stringer/multi-beam or girder carrying 7th St-Y 13 over US 20 & 52 in Dubuque 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 1,089 vehicles a day, projected to reach 1,089 by 2044. The structure is 431 ft (131.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries7th St-Y 13
CrossesUS 20 & 52
Location0.5 Mi. W of Jct. SR Y13
RouteCity Street 0
CountyDubuque County
StateIowa
Coordinates42.44054, -91.01387
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating64.8 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length431 ft (131.4 m)
Longest span139 ft (42.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,089 (2022)
Projected traffic1,089 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 7th St-Y 13 over US 20 & 52 built?

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

What condition is 7th St-Y 13 over US 20 & 52 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 7th St-Y 13 over US 20 & 52 carry?

About 1,089 vehicles per day (2022 count).

How long is 7th St-Y 13 over US 20 & 52?

The structure is 431 ft (131.4 m) long with a longest span of 139 ft (42.4 m) and a deck 43 ft wide.

Who owns 7th St-Y 13 over US 20 & 52?

It is owned by the State Highway Agency.