US Bridges

I-380 Ramp F EB over US 30 & 151

Fair

Linn County, Iowa · 0.3 Mi. E of Jct. 380 · Structure no. 000000000600606

Built
1975
50 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
517 ft
4 main spans
Daily traffic
7,600
2022 count
Owner
State
State Highway Agency

About this bridge

I-380 Ramp F EB over US 30 & 151 is a steel continuous stringer/multi-beam or girder carrying I-380 Ramp F EB over US 30 & 151 in Linn County, Iowa. It was built in 1975, so it is 50 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 6 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 7,600 vehicles a day, roughly 9% of them trucks, projected to reach 7,600 by 2043. The structure is 517 ft (157.6 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesI-380 Ramp F EB
CrossesUS 30 & 151
Location0.3 Mi. E of Jct. 380
RouteInterstate 380
CountyLinn County
StateIowa
Coordinates41.92733, -91.66517
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79 US tons
Inventory rating47.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length517 ft (157.6 m)
Longest span160 ft (48.8 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,600 (2022)
Projected traffic7,600 by 2043
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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 Ramp F EB over US 30 & 151 built?

It was built in 1975, making it 50 years old in 2025.

What condition is I-380 Ramp F EB over US 30 & 151 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 October 2023.

How much traffic does I-380 Ramp F EB over US 30 & 151 carry?

About 7,600 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is I-380 Ramp F EB over US 30 & 151?

The structure is 517 ft (157.6 m) long with a longest span of 160 ft (48.8 m) and a deck 37 ft wide.

Who owns I-380 Ramp F EB over US 30 & 151?

It is owned by the State Highway Agency.