US Bridges

IRR BIA RTE 501 over Blackbird Creek

Poor

Thurston County, Nebraska · 5 KM East of Macy · Structure no. 00000000000A048

Built
1967
58 years old
Condition
Poor
inspected April 2024
Type
Channel Beam
Concrete
Length
109 ft
3 main spans
Daily traffic
28
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 501 over Blackbird Creek is a concrete channel beam carrying IRR BIA RTE 501 over Blackbird Creek in Thurston County, Nebraska. It was built in 1967, so it is 58 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, posting recommended but not legally implemented.

It carries about 28 vehicles a day, roughly 5% of them trucks, projected to reach 35 by 2044. The structure is 109 ft (33.2 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesIRR BIA RTE 501
CrossesBlackbird Creek
Location5 KM East of Macy
RouteFederal Lands Road 501
Coordinates42.10931, -96.31708
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating34.5 US tons
Inventory rating26.6 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length109 ft (33.2 m)
Longest span36 ft (11 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28 (2024)
Projected traffic35 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
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 IRR BIA RTE 501 over Blackbird Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is IRR BIA RTE 501 over Blackbird Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.

How much traffic does IRR BIA RTE 501 over Blackbird Creek carry?

About 28 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 501 over Blackbird Creek?

The structure is 109 ft (33.2 m) long with a longest span of 36 ft (11 m) and a deck 26 ft wide.

Who owns IRR BIA RTE 501 over Blackbird Creek?

It is owned by the Bureau of Indian Affairs.