US Bridges

Irr/Coll 7784 over Stream

FairPosted for load

Thurston County, Nebraska · 5N N16 Wayne Cl · Structure no. C008700110

Built
1935
90 years old
Condition
Fair
inspected October 2023
Type
Girder and Floorbeam System
Steel
Length
42 ft
1 main span
Daily traffic
55
1998 count
Owner
County
County Highway Agency

About this bridge

Irr/Coll 7784 over Stream is a steel girder and floorbeam system carrying Irr/Coll 7784 over Stream in Thurston County, Nebraska. It was built in 1935, 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 55 vehicles a day, projected to reach 93 by 2033. The structure is 42 ft (12.8 m) long and 17 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

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CarriesIrr/Coll 7784
CrossesStream
Location5N N16 Wayne Cl
RouteCounty Highway 7784
CountyThurston County
StateNebraska
Coordinates42.1812, -96.8231
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 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 statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating18.7 US tons
Inventory rating11 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span42 ft (12.8 m)
Deck width17 ft (5.1 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (1998)
Projected traffic93 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Irr/Coll 7784 over Stream built?

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

What condition is Irr/Coll 7784 over Stream 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 Irr/Coll 7784 over Stream carry?

About 55 vehicles per day (1998 count).

How long is Irr/Coll 7784 over Stream?

The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 17 ft wide.

Who owns Irr/Coll 7784 over Stream?

It is owned by the County Highway Agency.