US Bridges

Coll 7816 over Silver Creek

FairPosted for load

Otoe County, Nebraska · .5W 3S Palmyra · Structure no. C006610720

Built
1935
90 years old, rebuilt 2014
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
69 ft
1 main span
Daily traffic
60
1998 count
Owner
County
County Highway Agency

About this bridge

Coll 7816 over Silver Creek is a steel stringer/multi-beam or girder carrying Coll 7816 over Silver Creek in Otoe County, Nebraska. It was built in 1935 and reconstructed in 2014, so it is 90 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 60 vehicles a day, projected to reach 102 by 2033. The structure is 69 ft (21 m) long and 16 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesColl 7816
CrossesSilver Creek
Location.5W 3S Palmyra
RouteCounty Highway 7816
CountyOtoe County
StateNebraska
Coordinates40.6555, -96.4066
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating14.3 US tons
Inventory rating7.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadUnknown
Structure length69 ft (21 m)
Longest span35 ft (10.7 m)
Deck width16 ft (4.8 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (1998)
Projected traffic102 by 2033
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Coll 7816 over Silver Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2014.

What condition is Coll 7816 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 November 2024.

How much traffic does Coll 7816 over Silver Creek carry?

About 60 vehicles per day (1998 count).

How long is Coll 7816 over Silver Creek?

The structure is 69 ft (21 m) long with a longest span of 35 ft (10.7 m) and a deck 16 ft wide.

Who owns Coll 7816 over Silver Creek?

It is owned by the County Highway Agency.