US Bridges

N91 over Shell Creek Tributary

Fair

Platte County, Nebraska · In Lindsay · Structure no. S091 14175

Built
1952
73 years old, rebuilt 1984
Condition
Fair
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
75 ft
3 main spans
Daily traffic
2,240
2018 count
Owner
State
State Highway Agency

About this bridge

N91 over Shell Creek Tributary is a prestressed concrete tee beam carrying N91 over Shell Creek Tributary in Platte County, Nebraska. It was built in 1952 and reconstructed in 1984, so it is 73 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 6 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 2,240 vehicles a day, roughly 14% of them trucks, projected to reach 3,248 by 2038. The structure is 75 ft (22.9 m) long and 43 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

Open in Google Maps
CarriesN91
CrossesShell Creek Tributary
LocationIn Lindsay
RouteState Highway 91
CountyPlatte County
StateNebraska
Coordinates41.7, -97.6917
Functional classRural Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
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 rating66.1 US tons
Inventory rating38.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span25 ft (7.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,240 (2018)
Projected traffic3,248 by 2038
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 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 N91 over Shell Creek Tributary built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1984.

What condition is N91 over Shell Creek Tributary 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 June 2023.

How much traffic does N91 over Shell Creek Tributary carry?

About 2,240 vehicles per day (2018 count), of which roughly 14% are trucks.

How long is N91 over Shell Creek Tributary?

The structure is 75 ft (22.9 m) long with a longest span of 25 ft (7.6 m) and a deck 43 ft wide.

Who owns N91 over Shell Creek Tributary?

It is owned by the State Highway Agency.