US Bridges

County Highway over N Fk Big Nemaha River TR

PoorPosted for load

Pawnee County, Nebraska · 2.5N 2.2E of Table Rock · Structure no. C006730845

Built
1935
90 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
15
2003 count
Owner
County
County Highway Agency

About this bridge

County Highway over N Fk Big Nemaha River TR is a steel stringer/multi-beam or girder carrying County Highway over N Fk Big Nemaha River TR in Pawnee County, Nebraska. It was built in 1935, so it is 90 years old, older 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. Its operating status is: posted for load restriction.

It carries about 15 vehicles a day, projected to reach 25 by 2033. The structure is 32 ft (9.8 m) long and 18 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesCounty Highway
CrossesN Fk Big Nemaha River TR
Location2.5N 2.2E of Table Rock
RouteCounty Highway 408
Coordinates40.2181, -96.0632
Functional classRural Local

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.3 US tons
Inventory rating7.7 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width18 ft (5.4 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2003)
Projected traffic25 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Highway over N Fk Big Nemaha River TR built?

It was built in 1935, making it 90 years old in 2025.

What condition is County Highway over N Fk Big Nemaha River TR 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 2023.

How much traffic does County Highway over N Fk Big Nemaha River TR carry?

About 15 vehicles per day (2003 count).

How long is County Highway over N Fk Big Nemaha River TR?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 18 ft wide.

Who owns County Highway over N Fk Big Nemaha River TR?

It is owned by the County Highway Agency.