US Bridges

I 380 SB Off Ramp over 2nd ST NE

Fair

Linn County, Iowa · 3.9 Mi. N of Jct. US 30 · Structure no. 000000000603960

Built
1979
46 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
588 ft
9 main spans
Daily traffic
4,650
2022 count
Owner
State
State Highway Agency

About this bridge

I 380 SB Off Ramp over 2nd ST NE is a steel continuous stringer/multi-beam or girder carrying I 380 SB Off Ramp over 2nd ST NE in Linn County, Iowa. It was built in 1979, so it is 46 years old, older than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,650 vehicles a day, roughly 1% of them trucks, projected to reach 4,650 by 2044. The structure is 588 ft (179.2 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 380 SB Off Ramp
Crosses2nd ST NE
Location3.9 Mi. N of Jct. US 30
RouteInterstate 380
CountyLinn County
StateIowa
Coordinates41.98056, -91.66899
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating80.6 US tons
Inventory rating48.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length588 ft (179.2 m)
Longest span67 ft (20.4 m)
Deck width25 ft (7.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic4,650 (2022)
Projected traffic4,650 by 2044
Trucks1%
Lanes on structure1
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 I 380 SB Off Ramp over 2nd ST NE built?

It was built in 1979, making it 46 years old in 2025.

What condition is I 380 SB Off Ramp over 2nd ST NE in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does I 380 SB Off Ramp over 2nd ST NE carry?

About 4,650 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I 380 SB Off Ramp over 2nd ST NE?

The structure is 588 ft (179.2 m) long with a longest span of 67 ft (20.4 m) and a deck 25 ft wide.

Who owns I 380 SB Off Ramp over 2nd ST NE?

It is owned by the State Highway Agency.