US Bridges

T Road over N Br Big Blue River

FairPosted for load

Hamilton County, Nebraska · Kronborg · Structure no. C004103720

Built
1935
90 years old
Condition
Fair
inspected September 2024
Type
Girder and Floorbeam System
Steel
Length
38 ft
1 main span
Daily traffic
45
1998 count
Owner
County
County Highway Agency

About this bridge

T Road over N Br Big Blue River is a steel girder and floorbeam system carrying T Road over N Br Big Blue River in Hamilton 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 45 vehicles a day, projected to reach 76 by 2033. The structure is 38 ft (11.6 m) long and 20 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesT Road
CrossesN Br Big Blue River
LocationKronborg
RouteCounty Highway 7611
CountyHamilton County
StateNebraska
Coordinates41.0031, -97.9405
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.8 US tons
Inventory rating17.6 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span36 ft (11 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (1998)
Projected traffic76 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 T Road over N Br Big Blue River built?

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

What condition is T Road over N Br Big Blue River 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 2024.

How much traffic does T Road over N Br Big Blue River carry?

About 45 vehicles per day (1998 count).

How long is T Road over N Br Big Blue River?

The structure is 38 ft (11.6 m) long with a longest span of 36 ft (11 m) and a deck 20 ft wide.

Who owns T Road over N Br Big Blue River?

It is owned by the County Highway Agency.