US Bridges

US75 over S Fk Big Nemaha River

Good

Richardson County, Nebraska · 3S Dawson · Structure no. S075 00596

Built
1958
67 years old, rebuilt 1992
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
101 ft
3 main spans
Daily traffic
3,145
2018 count
Owner
State
State Highway Agency

About this bridge

US75 over S Fk Big Nemaha River is a concrete continuous slab carrying US75 over S Fk Big Nemaha River in Richardson County, Nebraska. It was built in 1958 and reconstructed in 1992, so it is 67 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,145 vehicles a day, roughly 30% of them trucks, projected to reach 4,089 by 2038. The structure is 101 ft (30.8 m) long and 46 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesUS75
CrossesS Fk Big Nemaha River
Location3S Dawson
RouteU.S. Route 75
Coordinates40.0802, -95.8227
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating65 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length101 ft (30.8 m)
Longest span41 ft (12.5 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,145 (2018)
Projected traffic4,089 by 2038
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemYes

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 US75 over S Fk Big Nemaha River built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1992.

What condition is US75 over S Fk Big Nemaha 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 August 2024.

How much traffic does US75 over S Fk Big Nemaha River carry?

About 3,145 vehicles per day (2018 count), of which roughly 30% are trucks.

How long is US75 over S Fk Big Nemaha River?

The structure is 101 ft (30.8 m) long with a longest span of 41 ft (12.5 m) and a deck 46 ft wide.

Who owns US75 over S Fk Big Nemaha River?

It is owned by the State Highway Agency.