US Bridges

FAS 1660 over South Loup River

Good

Custer County, Nebraska · JCT N40/N21 6.8N · Structure no. C002115315

Built
1987
38 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
160 ft
3 main spans
Daily traffic
50
2011 count
Owner
County
County Highway Agency

About this bridge

FAS 1660 over South Loup River is a steel continuous stringer/multi-beam or girder carrying FAS 1660 over South Loup River in Custer County, Nebraska. It was built in 1987, so it is 38 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, roughly 60% of them trucks, projected to reach 63 by 2033. The structure is 160 ft (48.8 m) long and 28 ft wide. If it were closed, the detour would be 167.8 mi (270 km).

CarriesFAS 1660
CrossesSouth Loup River
LocationJCT N40/N21 6.8N
RouteCounty Highway 1660
Coordinates41.2343, -99.7592
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.4 US tons
Inventory rating34.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length160 ft (48.8 m)
Longest span64 ft (19.5 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2011)
Projected traffic63 by 2033
Trucks60%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed167.8 mi (270 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 1660 over South Loup River built?

It was built in 1987, making it 38 years old in 2025.

What condition is FAS 1660 over South Loup 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 2023.

How much traffic does FAS 1660 over South Loup River carry?

About 50 vehicles per day (2011 count), of which roughly 60% are trucks.

How long is FAS 1660 over South Loup River?

The structure is 160 ft (48.8 m) long with a longest span of 64 ft (19.5 m) and a deck 28 ft wide.

Who owns FAS 1660 over South Loup River?

It is owned by the County Highway Agency.