US Bridges

FAS 2420 over N Br Big Blue River

Fair

Hamilton County, Nebraska · JCT US34/N14 5N 1.7E · Structure no. C004103210

Built
1987
38 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
65
2011 count
Owner
County
County Highway Agency

About this bridge

FAS 2420 over N Br Big Blue River is a steel stringer/multi-beam or girder carrying FAS 2420 over N Br Big Blue River in Hamilton County, Nebraska. It was built in 1987, so it is 38 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 5 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 65 vehicles a day, projected to reach 45 by 2033. The structure is 30 ft (9.1 m) long and 29 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

CarriesFAS 2420
CrossesN Br Big Blue River
LocationJCT US34/N14 5N 1.7E
RouteCounty Highway 2420
Coordinates40.9452, -97.9669
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating36.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2011)
Projected traffic45 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FAS 2420 over N Br Big Blue River built?

It was built in 1987, making it 38 years old in 2025.

What condition is FAS 2420 over N Br Big Blue 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 November 2023.

How much traffic does FAS 2420 over N Br Big Blue River carry?

About 65 vehicles per day (2011 count).

How long is FAS 2420 over N Br Big Blue River?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 29 ft wide.

Who owns FAS 2420 over N Br Big Blue River?

It is owned by the County Highway Agency.