US Bridges

SB US 61/151 over 7th ST

Good

Dubuque County, Iowa · 0.3 M. S of Jct. Ia. 3 · Structure no. 000000000601210

Built
1992
33 years old
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
128 ft
1 main span
Daily traffic
11,150
2022 count
Owner
State
State Highway Agency

About this bridge

SB US 61/151 over 7th ST is a steel continuous stringer/multi-beam or girder carrying SB US 61/151 over 7th ST in Dubuque County, Iowa. It was built in 1992, so it is 33 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 11,150 vehicles a day, roughly 17% of them trucks, projected to reach 11,150 by 2043. The structure is 128 ft (39 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSB US 61/151
Crosses7th ST
Location0.3 M. S of Jct. Ia. 3
RouteU.S. Route 61
StateIowa
Coordinates42.50176, -90.66148
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.8 US tons
Inventory rating31.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length128 ft (39 m)
Longest span125 ft (38.1 m)
Deck width58 ft (17.6 m)
Roadway width54 ft (16.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,150 (2022)
Projected traffic11,150 by 2043
Trucks17%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SB US 61/151 over 7th ST built?

It was built in 1992, making it 33 years old in 2025.

What condition is SB US 61/151 over 7th ST 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 December 2023.

How much traffic does SB US 61/151 over 7th ST carry?

About 11,150 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is SB US 61/151 over 7th ST?

The structure is 128 ft (39 m) long with a longest span of 125 ft (38.1 m) and a deck 58 ft wide.

Who owns SB US 61/151 over 7th ST?

It is owned by the State Highway Agency.