US Bridges

Irr/Fas 3550 over Logan Creek

Good

Thurston County, Nebraska · JCT N9/S-87A 2.5W · Structure no. C008701605

Built
1980
45 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
264 ft
1 main span
Daily traffic
140
2011 count
Owner
County
County Highway Agency

About this bridge

Irr/Fas 3550 over Logan Creek is a steel continuous stringer/multi-beam or girder carrying Irr/Fas 3550 over Logan Creek in Thurston County, Nebraska. It was built in 1980, so it is 45 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 140 vehicles a day, projected to reach 165 by 2042. The structure is 264 ft (80.5 m) long and 30 ft wide. If it were closed, the detour would be 37.3 mi (60 km).

CarriesIrr/Fas 3550
CrossesLogan Creek
LocationJCT N9/S-87A 2.5W
RouteCounty Highway 3550
Coordinates42.1772, -96.7739
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.6 US tons
Inventory rating23.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length264 ft (80.5 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2011)
Projected traffic165 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.3 mi (60 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 Logan Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Irr/Fas 3550 over Logan 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 October 2024.

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

About 140 vehicles per day (2011 count).

How long is Irr/Fas 3550 over Logan Creek?

The structure is 264 ft (80.5 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns Irr/Fas 3550 over Logan Creek?

It is owned by the County Highway Agency.