US Bridges

I80 over Big Blue River

Fair

Seward County, Nebraska · 1W Milford Intrchg · Structure no. S080 38096L

Built
1964
61 years old, rebuilt 1996
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
353 ft
3 main spans
Daily traffic
30,530
2018 count
Owner
State
State Highway Agency

About this bridge

I80 over Big Blue River is a steel continuous stringer/multi-beam or girder carrying I80 over Big Blue River in Seward County, Nebraska. It was built in 1964 and reconstructed in 1996, so it is 61 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 30,530 vehicles a day, roughly 28% of them trucks, projected to reach 33,583 by 2038. The structure is 353 ft (107.6 m) long and 45 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesI80
CrossesBig Blue River
Location1W Milford Intrchg
RouteInterstate 80
Coordinates40.82216, -97.06677
Functional classRural 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.2 US tons
Inventory rating33.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length353 ft (107.6 m)
Longest span140 ft (42.7 m)
Deck width45 ft (13.8 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,530 (2018)
Projected traffic33,583 by 2038
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I80 over Big Blue River built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1996.

What condition is I80 over Big Blue River 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 January 2025.

How much traffic does I80 over Big Blue River carry?

About 30,530 vehicles per day (2018 count), of which roughly 28% are trucks.

How long is I80 over Big Blue River?

The structure is 353 ft (107.6 m) long with a longest span of 140 ft (42.7 m) and a deck 45 ft wide.

Who owns I80 over Big Blue River?

It is owned by the State Highway Agency.