US Bridges

SB US 65 over Ia 5

Good

Polk County, Iowa · At N Jct. of Ia 5 · Structure no. 000000000606760

Built
1997
28 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
281 ft
2 main spans
Daily traffic
6,850
2023 count
Owner
State
State Highway Agency

About this bridge

SB US 65 over Ia 5 is a steel continuous stringer/multi-beam or girder carrying SB US 65 over Ia 5 in Polk County, Iowa. It was built in 1997, so it is 28 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 6,850 vehicles a day, roughly 15% of them trucks, projected to reach 6,850 by 2043. The structure is 281 ft (85.6 m) long and 51 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSB US 65
CrossesIa 5
LocationAt N Jct. of Ia 5
RouteU.S. Route 65
CountyPolk County
StateIowa
Coordinates41.51217, -93.52434
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.
Substructure8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating76.3 US tons
Inventory rating45.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length281 ft (85.6 m)
Longest span142 ft (43.3 m)
Deck width51 ft (15.6 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,850 (2023)
Projected traffic6,850 by 2043
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
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 65 over Ia 5 built?

It was built in 1997, making it 28 years old in 2025.

What condition is SB US 65 over Ia 5 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 2024.

How much traffic does SB US 65 over Ia 5 carry?

About 6,850 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SB US 65 over Ia 5?

The structure is 281 ft (85.6 m) long with a longest span of 142 ft (43.3 m) and a deck 51 ft wide.

Who owns SB US 65 over Ia 5?

It is owned by the State Highway Agency.