US Bridges

WB-I480 over 20th Thru 16th

Fair

Douglas County, Nebraska · In Omaha · Structure no. S480 00310L

Built
1970
55 years old, rebuilt 2021
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Steel Continuous
Length
1,572 ft
14 main spans
Daily traffic
42,920
2018 count
Owner
State
State Highway Agency

About this bridge

WB-I480 over 20th Thru 16th is a steel continuous box beam or girders - multiple carrying WB-I480 over 20th Thru 16th in Douglas County, Nebraska. It was built in 1970 and reconstructed in 2021, so it is 55 years old, older than the Nebraska average of 47.1 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 42,920 vehicles a day, roughly 4% of them trucks, projected to reach 42,920 by 2038. The structure is 1,572 ft (479.1 m) long and 58 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

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CarriesWB-I480
Crosses20th Thru 16th
LocationIn Omaha
RouteInterstate 480
CountyDouglas County
StateNebraska
Coordinates41.2632, -95.9398
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32 US tons
Inventory rating18.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans14
Design loadUnknown
Structure length1,572 ft (479.1 m)
Longest span135 ft (41.1 m)
Deck width58 ft (17.8 m)
Roadway width55 ft (16.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,920 (2018)
Projected traffic42,920 by 2038
Trucks4%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed12.4 mi (20 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was WB-I480 over 20th Thru 16th built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2021.

What condition is WB-I480 over 20th Thru 16th 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 March 2023.

How much traffic does WB-I480 over 20th Thru 16th carry?

About 42,920 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is WB-I480 over 20th Thru 16th?

The structure is 1,572 ft (479.1 m) long with a longest span of 135 ft (41.1 m) and a deck 58 ft wide.

Who owns WB-I480 over 20th Thru 16th?

It is owned by the State Highway Agency.