US Bridges

Coll 7511 over Blackbird Creek

Good

Holt County, Nebraska · 3E 13.5N Oneill · Structure no. C004556920

Built
1989
36 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
40
1998 count
Owner
County
County Highway Agency

About this bridge

Coll 7511 over Blackbird Creek is a concrete culvert carrying Coll 7511 over Blackbird Creek in Holt County, Nebraska. It was built in 1989, so it is 36 years old, younger than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 40 vehicles a day, projected to reach 68 by 2033. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 62.1 mi (100 km).

Location

Open in Google Maps
CarriesColl 7511
CrossesBlackbird Creek
Location3E 13.5N Oneill
RouteCounty Highway 7511
CountyHolt County
StateNebraska
Coordinates42.663, -98.5794
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (1998)
Projected traffic68 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed62.1 mi (100 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 7511 over Blackbird Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Coll 7511 over Blackbird Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Coll 7511 over Blackbird Creek carry?

About 40 vehicles per day (1998 count).

How long is Coll 7511 over Blackbird Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Coll 7511 over Blackbird Creek?

It is owned by the County Highway Agency.