US Bridges

NB US 61/151 over East 9th ST & Cn RR

Good

Dubuque County, Iowa · Over E 9th Street · Structure no. 000000000601125

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

About this bridge

NB US 61/151 over East 9th ST & Cn RR is a steel continuous stringer/multi-beam or girder carrying NB US 61/151 over East 9th ST & Cn RR 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 2042. The structure is 418 ft (127.4 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB US 61/151
CrossesEast 9th ST & Cn RR
LocationOver E 9th Street
RouteU.S. Route 61
CountyDubuque County
StateIowa
Coordinates42.50288, -90.66097
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 inspectionMay 2023
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 alignment7: Better than present minimum criteria
Operating rating84.9 US tons
Inventory rating50.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length418 ft (127.4 m)
Longest span153 ft (46.6 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,150 (2022)
Projected traffic11,150 by 2042
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and railroad
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 NB US 61/151 over East 9th ST & Cn RR built?

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

What condition is NB US 61/151 over East 9th ST & Cn RR 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 May 2023.

How much traffic does NB US 61/151 over East 9th ST & Cn RR carry?

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

How long is NB US 61/151 over East 9th ST & Cn RR?

The structure is 418 ft (127.4 m) long with a longest span of 153 ft (46.6 m) and a deck 40 ft wide.

Who owns NB US 61/151 over East 9th ST & Cn RR?

It is owned by the State Highway Agency.