US Bridges

South Airport RD over Elkhorn River Trib

Fair

Madison County, Nebraska · 3S 3W of Norfolk · Structure no. C005901825

Built
1987
38 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
175
1998 count
Owner
County
County Highway Agency

About this bridge

South Airport RD over Elkhorn River Trib is a steel stringer/multi-beam or girder carrying South Airport RD over Elkhorn River Trib in Madison 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 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 175 vehicles a day, projected to reach 175 by 2033. The structure is 30 ft (9.1 m) long and 27 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesSouth Airport RD
CrossesElkhorn River Trib
Location3S 3W of Norfolk
RouteCounty Highway 7702
CountyMadison County
StateNebraska
Coordinates41.9744, -97.487
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating30.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span27 ft (8.2 m)
Deck width27 ft (8.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (1998)
Projected traffic175 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 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 South Airport RD over Elkhorn River Trib built?

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

What condition is South Airport RD over Elkhorn River Trib 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 December 2023.

How much traffic does South Airport RD over Elkhorn River Trib carry?

About 175 vehicles per day (1998 count).

How long is South Airport RD over Elkhorn River Trib?

The structure is 30 ft (9.1 m) long with a longest span of 27 ft (8.2 m) and a deck 27 ft wide.

Who owns South Airport RD over Elkhorn River Trib?

It is owned by the County Highway Agency.