US Bridges

E 15th Ramp D over E University Ramp B

Good

Polk County, Iowa · 0.3 Mile E of JCT US 69 · Structure no. 000000000609255

Built
2004
21 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
519 ft
3 main spans
Daily traffic
8,000
2022 count
Owner
State
State Highway Agency

About this bridge

E 15th Ramp D over E University Ramp B is a steel continuous stringer/multi-beam or girder carrying E 15th Ramp D over E University Ramp B in Polk County, Iowa. It was built in 2004, so it is 21 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 8,000 vehicles a day, roughly 8% of them trucks, projected to reach 8,000 by 2044. The structure is 519 ft (158.2 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesE 15th Ramp D
CrossesE University Ramp B
Location0.3 Mile E of JCT US 69
RouteInterstate 235
StateIowa
Coordinates41.59801, -93.58977
Functional classUrban Principal Arterial - Interstate

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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating92.9 US tons
Inventory rating55.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length519 ft (158.2 m)
Longest span247 ft (75.3 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2022)
Projected traffic8,000 by 2044
Trucks8%
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 E 15th Ramp D over E University Ramp B built?

It was built in 2004, making it 21 years old in 2025.

What condition is E 15th Ramp D over E University Ramp B 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 E 15th Ramp D over E University Ramp B carry?

About 8,000 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is E 15th Ramp D over E University Ramp B?

The structure is 519 ft (158.2 m) long with a longest span of 247 ft (75.3 m) and a deck 29 ft wide.

Who owns E 15th Ramp D over E University Ramp B?

It is owned by the State Highway Agency.