US Bridges

Coll 7617 over Silver Creek

Good

Merrick County, Nebraska · 2.5W 1N Central City · Structure no. C006102510

Built
1985
40 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
46 ft
4 main spans
Daily traffic
90
1998 count
Owner
County
County Highway Agency

About this bridge

Coll 7617 over Silver Creek is a concrete culvert carrying Coll 7617 over Silver Creek in Merrick County, Nebraska. It was built in 1985, so it is 40 years old, younger than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 90 vehicles a day, projected to reach 90 by 2033. The structure is 46 ft (14 m) long. If it were closed, the detour would be 31.1 mi (50 km).

CarriesColl 7617
CrossesSilver Creek
Location2.5W 1N Central City
RouteCounty Highway 7617
Coordinates41.1357, -98.0588
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection9 ExcellentNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length46 ft (14 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (1998)
Projected traffic90 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 Coll 7617 over Silver Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Coll 7617 over Silver Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Coll 7617 over Silver Creek carry?

About 90 vehicles per day (1998 count).

How long is Coll 7617 over Silver Creek?

The structure is 46 ft (14 m) long with a longest span of 10 ft (3 m).

Who owns Coll 7617 over Silver Creek?

It is owned by the County Highway Agency.