US Bridges

S34B Firth Spur over M Br Big Nemaha River

Fair

Lancaster County, Nebraska · JCT N41/S34B 4.6N · Structure no. SS34B00455

Built
1989
36 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete Continuous
Length
87 ft
3 main spans
Daily traffic
1,050
2018 count
Owner
State
State Highway Agency

About this bridge

S34B Firth Spur over M Br Big Nemaha River is a concrete continuous slab carrying S34B Firth Spur over M Br Big Nemaha River in Lancaster County, Nebraska. It was built in 1989, so it is 36 years old, younger 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 1,050 vehicles a day, roughly 7% of them trucks, projected to reach 1,470 by 2038. The structure is 87 ft (26.5 m) long and 39 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

Open in Google Maps
CarriesS34B Firth Spur
CrossesM Br Big Nemaha River
LocationJCT N41/S34B 4.6N
RouteState Highway 0S34B
CountyLancaster County
StateNebraska
Coordinates40.5309, -96.6095
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to 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 rating70.5 US tons
Inventory rating41.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length87 ft (26.5 m)
Longest span34 ft (10.4 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2018)
Projected traffic1,470 by 2038
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 S34B Firth Spur over M Br Big Nemaha River built?

It was built in 1989, making it 36 years old in 2025.

What condition is S34B Firth Spur over M Br Big Nemaha 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 February 2025.

How much traffic does S34B Firth Spur over M Br Big Nemaha River carry?

About 1,050 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is S34B Firth Spur over M Br Big Nemaha River?

The structure is 87 ft (26.5 m) long with a longest span of 34 ft (10.4 m) and a deck 39 ft wide.

Who owns S34B Firth Spur over M Br Big Nemaha River?

It is owned by the State Highway Agency.