US Bridges

FAS 3665 over N Fk Big Nemaha River

Good

Johnson County, Nebraska · JCT N41/N50 6W .3S · Structure no. C004901935

Built
1976
49 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
279 ft
3 main spans
Daily traffic
205
2011 count
Owner
County
County Highway Agency

About this bridge

FAS 3665 over N Fk Big Nemaha River is a steel continuous stringer/multi-beam or girder carrying FAS 3665 over N Fk Big Nemaha River in Johnson County, Nebraska. It was built in 1976, so it is 49 years old, older 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 205 vehicles a day, projected to reach 140 by 2033. The structure is 279 ft (85 m) long and 29 ft wide. If it were closed, the detour would be 62.1 mi (100 km).

CarriesFAS 3665
CrossesN Fk Big Nemaha River
LocationJCT N41/N50 6W .3S
RouteCounty Highway 3665
Coordinates40.415, -96.2933
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.5 US tons
Inventory rating28.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length279 ft (85 m)
Longest span105 ft (32 m)
Deck width29 ft (8.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic205 (2011)
Projected traffic140 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 FAS 3665 over N Fk Big Nemaha River built?

It was built in 1976, making it 49 years old in 2025.

What condition is FAS 3665 over N Fk Big Nemaha River 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 October 2024.

How much traffic does FAS 3665 over N Fk Big Nemaha River carry?

About 205 vehicles per day (2011 count).

How long is FAS 3665 over N Fk Big Nemaha River?

The structure is 279 ft (85 m) long with a longest span of 105 ft (32 m) and a deck 29 ft wide.

Who owns FAS 3665 over N Fk Big Nemaha River?

It is owned by the County Highway Agency.