US Bridges

NB US 65 over Over 4 Mi. Ck & Iais RR

Good

Polk County, Iowa · 2.9 Miles S of JCT I-80 · Structure no. 000000000601375

Built
1994
31 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
464 ft
4 main spans
Daily traffic
14,300
2022 count
Owner
State
State Highway Agency

About this bridge

NB US 65 over Over 4 Mi. Ck & Iais RR is a steel continuous stringer/multi-beam or girder carrying NB US 65 over Over 4 Mi. Ck & Iais RR in Polk County, Iowa. It was built in 1994, so it is 31 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 14,300 vehicles a day, roughly 15% of them trucks, projected to reach 14,300 by 2042. The structure is 464 ft (141.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNB US 65
CrossesOver 4 Mi. Ck & Iais RR
Location2.9 Miles S of JCT I-80
RouteU.S. Route 65
CountyPolk County
StateIowa
Coordinates41.6232, -93.49392
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.6 US tons
Inventory rating53.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length464 ft (141.4 m)
Longest span128 ft (39 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,300 (2022)
Projected traffic14,300 by 2042
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad and waterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was NB US 65 over Over 4 Mi. Ck & Iais RR built?

It was built in 1994, making it 31 years old in 2025.

What condition is NB US 65 over Over 4 Mi. Ck & Iais 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 65 over Over 4 Mi. Ck & Iais RR carry?

About 14,300 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is NB US 65 over Over 4 Mi. Ck & Iais RR?

The structure is 464 ft (141.4 m) long with a longest span of 128 ft (39 m) and a deck 43 ft wide.

Who owns NB US 65 over Over 4 Mi. Ck & Iais RR?

It is owned by the State Highway Agency.