US Bridges

FAS 1670 over South Loup River

Fair

Custer County, Nebraska · JCT N40/N21 11.3N 8.7W · Structure no. C002103505P

Built
1961
64 years old
Condition
Fair
inspected October 2023
Type
Slab
Concrete Continuous
Length
105 ft
3 main spans
Daily traffic
425
2011 count
Owner
County
County Highway Agency

About this bridge

FAS 1670 over South Loup River is a concrete continuous slab carrying FAS 1670 over South Loup River in Custer County, Nebraska. It was built in 1961, so it is 64 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.

It carries about 425 vehicles a day, projected to reach 425 by 2033. The structure is 105 ft (32 m) long and 31 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesFAS 1670
CrossesSouth Loup River
LocationJCT N40/N21 11.3N 8.7W
RouteCounty Highway 1670
CountyCuster County
StateNebraska
Coordinates41.2969, -99.9244
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.
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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length105 ft (32 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2011)
Projected traffic425 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 1670 over South Loup River built?

It was built in 1961, making it 64 years old in 2025.

What condition is FAS 1670 over South Loup 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 October 2023.

How much traffic does FAS 1670 over South Loup River carry?

About 425 vehicles per day (2011 count).

How long is FAS 1670 over South Loup River?

The structure is 105 ft (32 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns FAS 1670 over South Loup River?

It is owned by the County Highway Agency.