US Bridges

County Road Aa over Silver Creek

FairPosted for load

Merrick County, Nebraska · .3S .8W Silver Creek · Structure no. C006101410

Built
1953
72 years old, rebuilt 1987
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
79 ft
4 main spans
Daily traffic
40
2003 count
Owner
County
County Highway Agency

About this bridge

County Road Aa over Silver Creek is a wood or timber stringer/multi-beam or girder carrying County Road Aa over Silver Creek in Merrick County, Nebraska. It was built in 1953 and reconstructed in 1987, so it is 72 years old, older 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. Its operating status is: posted for load restriction.

It carries about 40 vehicles a day, projected to reach 68 by 2033. The structure is 79 ft (24.1 m) long and 20 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesCounty Road Aa
CrossesSilver Creek
Location.3S .8W Silver Creek
RouteCounty Highway 14
CountyMerrick County
StateNebraska
Coordinates41.3083, -97.6833
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating11 US tons
Inventory rating5.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckCorrugated steel
Main spans4
Design loadUnknown
Structure length79 ft (24.1 m)
Longest span21 ft (6.4 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2003)
Projected traffic68 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road Aa over Silver Creek built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1987.

What condition is County Road Aa over Silver Creek 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 September 2023.

How much traffic does County Road Aa over Silver Creek carry?

About 40 vehicles per day (2003 count).

How long is County Road Aa over Silver Creek?

The structure is 79 ft (24.1 m) long with a longest span of 21 ft (6.4 m) and a deck 20 ft wide.

Who owns County Road Aa over Silver Creek?

It is owned by the County Highway Agency.