US Bridges

Nighthawk Rd. over Spring Branch Creek

GoodPosted for load

Marion County, Kansas · 3.8S 5.0W of Marion · Structure no. 000000000570560

Built
1987
38 years old
Condition
Good
inspected February 2025
Type
Slab
Concrete Continuous
Length
102 ft
3 main spans
Daily traffic
280
2020 count
Owner
County
County Highway Agency

About this bridge

Nighthawk Rd. over Spring Branch Creek is a concrete continuous slab carrying Nighthawk Rd. over Spring Branch Creek in Marion County, Kansas. It was built in 1987, so it is 38 years old, younger than the Kansas average of 52.8 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. Its operating status is: posted for load restriction.

It carries about 280 vehicles a day, projected to reach 300 by 2045. The structure is 102 ft (31.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesNighthawk Rd.
CrossesSpring Branch Creek
Location3.8S 5.0W of Marion
RouteCounty Highway 428
CountyMarion County
StateKansas
Coordinates38.29272, -97.11394
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span40 ft (12.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic280 (2020)
Projected traffic300 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Nighthawk Rd. over Spring Branch Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Nighthawk Rd. over Spring Branch 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 February 2025.

How much traffic does Nighthawk Rd. over Spring Branch Creek carry?

About 280 vehicles per day (2020 count).

How long is Nighthawk Rd. over Spring Branch Creek?

The structure is 102 ft (31.1 m) long with a longest span of 40 ft (12.1 m) and a deck 32 ft wide.

Who owns Nighthawk Rd. over Spring Branch Creek?

It is owned by the County Highway Agency.