US Bridges

NB-I480 over I80/RAMP 4

Good

Douglas County, Nebraska · Grover ST Intrchg #4 · Structure no. S080 45303B

Built
1989
36 years old, rebuilt 1992
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,428 ft
9 main spans
Daily traffic
44,370
2002 count
Owner
State
State Highway Agency

About this bridge

NB-I480 over I80/RAMP 4 is a steel continuous stringer/multi-beam or girder carrying NB-I480 over I80/RAMP 4 in Douglas County, Nebraska. It was built in 1989 and reconstructed in 1992, so it is 36 years old, younger than the Nebraska average of 47.1 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 44,370 vehicles a day, roughly 7% of them trucks, projected to reach 62,118 by 2033. The structure is 1,428 ft (435.3 m) long and 49 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

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CarriesNB-I480
CrossesI80/RAMP 4
LocationGrover ST Intrchg #4
RouteInterstate 480
CountyDouglas County
StateNebraska
Coordinates41.2272, -95.954
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length1,428 ft (435.3 m)
Longest span242 ft (73.8 m)
Deck width49 ft (15 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic44,370 (2002)
Projected traffic62,118 by 2033
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NB-I480 over I80/RAMP 4 built?

It was built in 1989, making it 36 years old in 2025. It was reconstructed in 1992.

What condition is NB-I480 over I80/RAMP 4 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 March 2024.

How much traffic does NB-I480 over I80/RAMP 4 carry?

About 44,370 vehicles per day (2002 count), of which roughly 7% are trucks.

How long is NB-I480 over I80/RAMP 4?

The structure is 1,428 ft (435.3 m) long with a longest span of 242 ft (73.8 m) and a deck 49 ft wide.

Who owns NB-I480 over I80/RAMP 4?

It is owned by the State Highway Agency.