US Bridges

Irr/Fas 3550 over Middle Creek

Fair

Thurston County, Nebraska · JCT N9/S-87A 1.8E · Structure no. C008711610

Built
1950
75 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
121 ft
3 main spans
Daily traffic
115
2011 count
Owner
County
County Highway Agency

About this bridge

Irr/Fas 3550 over Middle Creek is a concrete continuous slab carrying Irr/Fas 3550 over Middle Creek in Thurston County, Nebraska. It was built in 1950, so it is 75 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 5 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 115 vehicles a day, projected to reach 130 by 2042. The structure is 121 ft (36.9 m) long and 24 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesIrr/Fas 3550
CrossesMiddle Creek
LocationJCT N9/S-87A 1.8E
RouteCounty Highway 3550
CountyThurston County
StateNebraska
Coordinates42.177, -96.6918
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.5 US tons
Inventory rating28.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length121 ft (36.9 m)
Longest span48 ft (14.6 m)
Deck width24 ft (7.4 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic115 (2011)
Projected traffic130 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18.6 mi (30 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 Irr/Fas 3550 over Middle Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Irr/Fas 3550 over Middle 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 November 2024.

How much traffic does Irr/Fas 3550 over Middle Creek carry?

About 115 vehicles per day (2011 count).

How long is Irr/Fas 3550 over Middle Creek?

The structure is 121 ft (36.9 m) long with a longest span of 48 ft (14.6 m) and a deck 24 ft wide.

Who owns Irr/Fas 3550 over Middle Creek?

It is owned by the County Highway Agency.