US Bridges

WB I-680 over Missouri River & City ST

Fair

Pottawattamie County, Iowa · In North Omaha · Structure no. 000000000603305

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel Continuous
Length
1,711 ft
3 main spans
Daily traffic
9,150
2022 count
Owner
State
State Highway Agency

About this bridge

WB I-680 over Missouri River & City ST is a steel continuous truss - thru carrying WB I-680 over Missouri River & City ST in Pottawattamie 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 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 9,150 vehicles a day, roughly 11% of them trucks, projected to reach 9,150 by 2043. The structure is 1,711 ft (521.5 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWB I-680
CrossesMissouri River & City ST
LocationIn North Omaha
RouteInterstate 680
CountyPottawattamie County
StateIowa
Coordinates41.34635, -95.95356
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckOther
Main spans3 (+7 approach)
Design loadHS 20
Structure length1,711 ft (521.5 m)
Longest span420 ft (128 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic9,150 (2022)
Projected traffic9,150 by 2043
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was WB I-680 over Missouri River & City ST built?

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

What condition is WB I-680 over Missouri River & City ST 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 September 2023.

How much traffic does WB I-680 over Missouri River & City ST carry?

About 9,150 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is WB I-680 over Missouri River & City ST?

The structure is 1,711 ft (521.5 m) long with a longest span of 420 ft (128 m) and a deck 42 ft wide.

Who owns WB I-680 over Missouri River & City ST?

It is owned by the State Highway Agency.