US Bridges

N27 over North Platte River

Fair

Garden County, Nebraska · 2S Oshkosh · Structure no. S027 11745

Built
1970
55 years old, rebuilt 2004
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
419 ft
6 main spans
Daily traffic
860
2018 count
Owner
State
State Highway Agency

About this bridge

N27 over North Platte River is a prestressed concrete stringer/multi-beam or girder carrying N27 over North Platte River in Garden County, Nebraska. It was built in 1970 and reconstructed in 2004, so it is 55 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 860 vehicles a day, roughly 10% of them trucks, projected to reach 1,118 by 2038. The structure is 419 ft (127.7 m) long and 43 ft wide. If it were closed, the detour would be 279.6 mi (450 km).

CarriesN27
CrossesNorth Platte River
Location2S Oshkosh
RouteState Highway 27
Coordinates41.3813, -102.3476
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.5 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6 (+2 approach)
Design loadHS 20
Structure length419 ft (127.7 m)
Longest span70 ft (21.3 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic860 (2018)
Projected traffic1,118 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed279.6 mi (450 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 N27 over North Platte River built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2004.

What condition is N27 over North Platte 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 September 2023.

How much traffic does N27 over North Platte River carry?

About 860 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is N27 over North Platte River?

The structure is 419 ft (127.7 m) long with a longest span of 70 ft (21.3 m) and a deck 43 ft wide.

Who owns N27 over North Platte River?

It is owned by the State Highway Agency.