US Bridges

I680 over Coll 39C/KNIGHT CR

Fair

Douglas County, Nebraska · In Omaha · Structure no. S680 00836R

Built
1971
54 years old, rebuilt 1994
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
226 ft
3 main spans
Daily traffic
35,400
2018 count
Owner
State
State Highway Agency

About this bridge

I680 over Coll 39C/KNIGHT CR is a steel continuous stringer/multi-beam or girder carrying I680 over Coll 39C/KNIGHT CR in Douglas County, Nebraska. It was built in 1971 and reconstructed in 1994, so it is 54 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 35,400 vehicles a day, roughly 6% of them trucks, projected to reach 38,940 by 2038. The structure is 226 ft (68.9 m) long and 42 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

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CarriesI680
CrossesColl 39C/KNIGHT CR
LocationIn Omaha
RouteInterstate 680
CountyDouglas County
StateNebraska
Coordinates41.3327, -96.0505
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.3 US tons
Inventory rating20.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length226 ft (68.9 m)
Longest span87 ft (26.5 m)
Deck width42 ft (12.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,400 (2018)
Projected traffic38,940 by 2038
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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 I680 over Coll 39C/KNIGHT CR built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 1994.

What condition is I680 over Coll 39C/KNIGHT CR 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 I680 over Coll 39C/KNIGHT CR carry?

About 35,400 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is I680 over Coll 39C/KNIGHT CR?

The structure is 226 ft (68.9 m) long with a longest span of 87 ft (26.5 m) and a deck 42 ft wide.

Who owns I680 over Coll 39C/KNIGHT CR?

It is owned by the State Highway Agency.