US Bridges

FAS 3680 over Rock Creek

Good

Otoe County, Nebraska · 1W US75 Nemaha Cl · Structure no. C006653845

Built
2002
23 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
172 ft
3 main spans
Daily traffic
165
2011 count
Owner
County
County Highway Agency

About this bridge

FAS 3680 over Rock Creek is a steel continuous stringer/multi-beam or girder carrying FAS 3680 over Rock Creek in Otoe County, Nebraska. It was built in 2002, so it is 23 years old, younger 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 165 vehicles a day, projected to reach 175 by 2033. The structure is 172 ft (52.4 m) long and 31 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

CarriesFAS 3680
CrossesRock Creek
Location1W US75 Nemaha Cl
RouteCounty Highway 3680
Coordinates40.523, -95.8721
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating52.9 US tons
Inventory rating30.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span68 ft (20.7 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic165 (2011)
Projected traffic175 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 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 Rock Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is FAS 3680 over Rock Creek 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 November 2024.

How much traffic does FAS 3680 over Rock Creek carry?

About 165 vehicles per day (2011 count).

How long is FAS 3680 over Rock Creek?

The structure is 172 ft (52.4 m) long with a longest span of 68 ft (20.7 m) and a deck 31 ft wide.

Who owns FAS 3680 over Rock Creek?

It is owned by the County Highway Agency.