US Bridges

Oak Lane over US 61

Good

Scott County, Iowa · 0.9 Mi. NE of SR Y36 · Structure no. 000000000607805

Built
2000
25 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
229 ft
2 main spans
Daily traffic
1,410
2022 count
Owner
State
State Highway Agency

About this bridge

Oak Lane over US 61 is a prestressed concrete stringer/multi-beam or girder carrying Oak Lane over US 61 in Scott County, Iowa. It was built in 2000, so it is 25 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 1,410 vehicles a day, roughly 8% of them trucks, projected to reach 1,410 by 2043. The structure is 229 ft (69.8 m) long and 43 ft wide.

CarriesOak Lane
CrossesUS 61
Location0.9 Mi. NE of SR Y36
RouteCity Street 0
StateIowa
Coordinates41.51414, -90.77776
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2023
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 rating99.8 US tons
Inventory rating42.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length229 ft (69.8 m)
Longest span116 ft (35.4 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,410 (2022)
Projected traffic1,410 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 Oak Lane over US 61 built?

It was built in 2000, making it 25 years old in 2025.

What condition is Oak Lane over US 61 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 September 2023.

How much traffic does Oak Lane over US 61 carry?

About 1,410 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Oak Lane over US 61?

The structure is 229 ft (69.8 m) long with a longest span of 116 ft (35.4 m) and a deck 43 ft wide.

Who owns Oak Lane over US 61?

It is owned by the State Highway Agency.