US Bridges

FAS 3420 over Cottonwood Creek

Fair

Saunders County, Nebraska · JCT N92/S-78E 4N .4W · Structure no. C007812630

Built
1981
44 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
107 ft
2 main spans
Daily traffic
30
2011 count
Owner
County
County Highway Agency

About this bridge

FAS 3420 over Cottonwood Creek is a steel stringer/multi-beam or girder carrying FAS 3420 over Cottonwood Creek in Saunders County, Nebraska. It was built in 1981, so it is 44 years old, younger 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.

It carries about 30 vehicles a day, projected to reach 30 by 2033. The structure is 107 ft (32.6 m) long and 29 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesFAS 3420
CrossesCottonwood Creek
LocationJCT N92/S-78E 4N .4W
RouteCounty Highway 3420
CountySaunders County
StateNebraska
Coordinates41.2641, -96.7252
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.6 US tons
Inventory rating29.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length107 ft (32.6 m)
Longest span73 ft (22.3 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2011)
Projected traffic30 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 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 3420 over Cottonwood Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is FAS 3420 over Cottonwood Creek 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 2024.

How much traffic does FAS 3420 over Cottonwood Creek carry?

About 30 vehicles per day (2011 count).

How long is FAS 3420 over Cottonwood Creek?

The structure is 107 ft (32.6 m) long with a longest span of 73 ft (22.3 m) and a deck 29 ft wide.

Who owns FAS 3420 over Cottonwood Creek?

It is owned by the County Highway Agency.