US Bridges

I80 EB to I380 NB over I 80/US 218/IA 27

Good

Johnson County, Iowa · I-80 / I-380 Interchange · Structure no. 000000000700720

Built
2020
5 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,771 ft
13 main spans
Daily traffic
2,800
2022 count
Owner
State
State Highway Agency

About this bridge

I80 EB to I380 NB over I 80/US 218/IA 27 is a steel continuous stringer/multi-beam or girder carrying I80 EB to I380 NB over I 80/US 218/IA 27 in Johnson County, Iowa. It was built in 2020, so it is 5 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,800 vehicles a day, roughly 26% of them trucks, projected to reach 2,800 by 2042. The structure is 2,771 ft (844.6 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI80 EB to I380 NB
CrossesI 80/US 218/IA 27
LocationI-80 / I-380 Interchange
RouteInterstate 80
CountyJohnson County
StateIowa
Coordinates41.69258, -91.63998
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating40.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans13
Design loadHL 93
Structure length2,771 ft (844.6 m)
Longest span246 ft (75 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,800 (2022)
Projected traffic2,800 by 2042
Trucks26%
Lanes on structure1
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 I80 EB to I380 NB over I 80/US 218/IA 27 built?

It was built in 2020, making it 5 years old in 2025.

What condition is I80 EB to I380 NB over I 80/US 218/IA 27 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 I80 EB to I380 NB over I 80/US 218/IA 27 carry?

About 2,800 vehicles per day (2022 count), of which roughly 26% are trucks.

How long is I80 EB to I380 NB over I 80/US 218/IA 27?

The structure is 2,771 ft (844.6 m) long with a longest span of 246 ft (75 m) and a deck 35 ft wide.

Who owns I80 EB to I380 NB over I 80/US 218/IA 27?

It is owned by the State Highway Agency.