US Bridges

FAS 3680 over S Fk Little Nemaha River

FairPosted for load

Otoe County, Nebraska · JCT N50/S-66E 4.1E · Structure no. C006613635

Built
1963
62 years old
Condition
Fair
inspected July 2023
Type
Truss - Thru
Steel
Length
268 ft
1 main span
Daily traffic
160
2011 count
Owner
County
County Highway Agency

About this bridge

FAS 3680 over S Fk Little Nemaha River is a steel truss - thru carrying FAS 3680 over S Fk Little Nemaha River in Otoe County, Nebraska. It was built in 1963, so it is 62 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 160 vehicles a day, projected to reach 160 by 2033. The structure is 268 ft (81.7 m) long and 24 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

Location

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CarriesFAS 3680
CrossesS Fk Little Nemaha River
LocationJCT N50/S-66E 4.1E
RouteCounty Highway 3680
CountyOtoe County
StateNebraska
Coordinates40.5377, -96.1031
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating16.5 US tons
Inventory rating8.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length268 ft (81.7 m)
Longest span187 ft (57 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deck15 ft (4.6 m)

Traffic and service

Average daily traffic160 (2011)
Projected traffic160 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 3680 over S Fk Little Nemaha River built?

It was built in 1963, making it 62 years old in 2025.

What condition is FAS 3680 over S Fk Little Nemaha 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 July 2023.

How much traffic does FAS 3680 over S Fk Little Nemaha River carry?

About 160 vehicles per day (2011 count).

How long is FAS 3680 over S Fk Little Nemaha River?

The structure is 268 ft (81.7 m) long with a longest span of 187 ft (57 m) and a deck 24 ft wide.

Who owns FAS 3680 over S Fk Little Nemaha River?

It is owned by the County Highway Agency.