US Bridges

N99 over Plum Creek

Fair

Pawnee County, Nebraska · Scl Burchard · Structure no. S099 00997

Built
1927
98 years old, rebuilt 1959
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
39 ft
3 main spans
Daily traffic
495
2018 count
Owner
State
State Highway Agency

About this bridge

N99 over Plum Creek is a concrete culvert carrying N99 over Plum Creek in Pawnee County, Nebraska. It was built in 1927 and reconstructed in 1959, so it is 98 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 495 vehicles a day, roughly 9% of them trucks, projected to reach 668 by 2038. The structure is 39 ft (11.9 m) long. If it were closed, the detour would be 31.1 mi (50 km).

CarriesN99
CrossesPlum Creek
LocationScl Burchard
RouteState Highway 99
Coordinates40.1453, -96.3503
Functional classRural Major 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36.4 US tons
Inventory rating24.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length39 ft (11.9 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 traffic495 (2018)
Projected traffic668 by 2038
Trucks9%
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 N99 over Plum Creek built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1959.

What condition is N99 over Plum Creek 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 June 2024.

How much traffic does N99 over Plum Creek carry?

About 495 vehicles per day (2018 count), of which roughly 9% are trucks.

How long is N99 over Plum Creek?

The structure is 39 ft (11.9 m) long with a longest span of 12 ft (3.7 m).

Who owns N99 over Plum Creek?

It is owned by the State Highway Agency.