US Bridges

N4 over Center Creek

Good

Franklin County, Nebraska · 8E Ragan · Structure no. S004 02624

Built
1978
47 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
480
2018 count
Owner
State
State Highway Agency

About this bridge

N4 over Center Creek is a concrete culvert carrying N4 over Center Creek in Franklin County, Nebraska. It was built in 1978, so it is 47 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 480 vehicles a day, roughly 14% of them trucks, projected to reach 720 by 2038. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesN4
CrossesCenter Creek
Location8E Ragan
RouteState Highway 4
CountyFranklin County
StateNebraska
Coordinates40.2925, -99.1529
Functional classRural Minor Arterial

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.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.4 US tons
Inventory rating36.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic480 (2018)
Projected traffic720 by 2038
Trucks14%
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

OwnerState Highway Agency
Maintained byState 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 N4 over Center Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is N4 over Center 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 April 2023.

How much traffic does N4 over Center Creek carry?

About 480 vehicles per day (2018 count), of which roughly 14% are trucks.

How long is N4 over Center Creek?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m).

Who owns N4 over Center Creek?

It is owned by the State Highway Agency.