US Bridges

FAS 3710 over Big Slough

Fair

Otoe County, Nebraska · JCT N2/N67 3.7N 3.4E · Structure no. C006631040

Built
1996
29 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
40
2011 count
Owner
County
County Highway Agency

About this bridge

FAS 3710 over Big Slough is a concrete continuous slab carrying FAS 3710 over Big Slough in Otoe County, Nebraska. It was built in 1996, so it is 29 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 40 vehicles a day, projected to reach 55 by 2033. The structure is 82 ft (25 m) long and 30 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesFAS 3710
CrossesBig Slough
LocationJCT N2/N67 3.7N 3.4E
RouteCounty Highway 3710
CountyOtoe County
StateNebraska
Coordinates40.7262, -95.9605
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length82 ft (25 m)
Longest span32 ft (9.8 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2011)
Projected traffic55 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 3710 over Big Slough built?

It was built in 1996, making it 29 years old in 2025.

What condition is FAS 3710 over Big Slough 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 November 2024.

How much traffic does FAS 3710 over Big Slough carry?

About 40 vehicles per day (2011 count).

How long is FAS 3710 over Big Slough?

The structure is 82 ft (25 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.

Who owns FAS 3710 over Big Slough?

It is owned by the County Highway Agency.