US Bridges

US 61 SB over Bluff RD

Good

Lee County, Iowa · 1.0 Mi. N of Jct. Iowa 2 · Structure no. 000000000609575

Built
2011
14 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
303 ft
3 main spans
Daily traffic
2,435
2022 count
Owner
State
State Highway Agency

About this bridge

US 61 SB over Bluff RD is a prestressed concrete stringer/multi-beam or girder carrying US 61 SB over Bluff RD in Lee County, Iowa. It was built in 2011, so it is 14 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 2,435 vehicles a day, roughly 17% of them trucks, projected to reach 2,435 by 2044. The structure is 303 ft (92.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 61 SB
CrossesBluff RD
Location1.0 Mi. N of Jct. Iowa 2
RouteU.S. Route 61
StateIowa
Coordinates40.63344, -91.38107
Functional classRural Principal Arterial - Other

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.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.1 US tons
Inventory rating40.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length303 ft (92.4 m)
Longest span122 ft (37.1 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,435 (2022)
Projected traffic2,435 by 2044
Trucks17%
Lanes on structure2
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 US 61 SB over Bluff RD built?

It was built in 2011, making it 14 years old in 2025.

What condition is US 61 SB over Bluff RD 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 US 61 SB over Bluff RD carry?

About 2,435 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is US 61 SB over Bluff RD?

The structure is 303 ft (92.4 m) long with a longest span of 122 ft (37.1 m) and a deck 43 ft wide.

Who owns US 61 SB over Bluff RD?

It is owned by the State Highway Agency.