US Bridges

N105 over Muddy Creek Tributary

Poor

Nemaha County, Nebraska · 4S Johnson · Structure no. S105 02395

Built
1980
45 years old
Condition
Poor
inspected July 2024
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
455
2018 count
Owner
State
State Highway Agency

About this bridge

N105 over Muddy Creek Tributary is a concrete continuous slab carrying N105 over Muddy Creek Tributary in Nemaha County, Nebraska. It was built in 1980, so it is 45 years old, younger than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 455 vehicles a day, roughly 10% of them trucks, projected to reach 614 by 2038. The structure is 102 ft (31.1 m) long and 31 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

Location

Open in Google Maps
CarriesN105
CrossesMuddy Creek Tributary
Location4S Johnson
RouteState Highway 105
CountyNemaha County
StateNebraska
Coordinates40.3526, -96.0092
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating77.2 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length102 ft (31.1 m)
Longest span40 ft (12.2 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic455 (2018)
Projected traffic614 by 2038
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 N105 over Muddy Creek Tributary built?

It was built in 1980, making it 45 years old in 2025.

What condition is N105 over Muddy Creek Tributary in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does N105 over Muddy Creek Tributary carry?

About 455 vehicles per day (2018 count), of which roughly 10% are trucks.

How long is N105 over Muddy Creek Tributary?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.2 m) and a deck 31 ft wide.

Who owns N105 over Muddy Creek Tributary?

It is owned by the State Highway Agency.