US Bridges

Coll 7816 over Silver Creek

Fair

Otoe County, Nebraska · 2.3S Palmyra · Structure no. C006611815

Built
1974
51 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
72 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 1974, so it is 51 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 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 60 vehicles a day, projected to reach 102 by 2033. The structure is 72 ft (21.9 m) long and 22 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesColl 7816
CrossesSilver Creek
Location2.3S Palmyra
RouteCounty Highway 7816
CountyOtoe County
StateNebraska
Coordinates40.668, -96.3912
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating44.1 US tons
Inventory rating26.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span70 ft (21.3 m)
Deck width22 ft (6.6 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (1998)
Projected traffic102 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Coll 7816 over Silver Creek built?

It was built in 1974, making it 51 years old in 2025.

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 October 2023.

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 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 22 ft wide.

Who owns Coll 7816 over Silver Creek?

It is owned by the County Highway Agency.