US Bridges

SW 29th ST over Salt Creek (t 177)

FairPosted for load

Lancaster County, Nebraska · .7SW of Sprague · Structure no. C005501720

Built
1935
90 years old, rebuilt 1977
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel
Length
101 ft
1 main span
Daily traffic
186
2016 count
Owner
County
County Highway Agency

About this bridge

SW 29th ST over Salt Creek (t 177) is a steel truss - thru carrying SW 29th ST over Salt Creek (t 177) in Lancaster County, Nebraska. It was built in 1935 and reconstructed in 1977, so it is 90 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. Its operating status is: posted for load restriction.

It carries about 186 vehicles a day, roughly 10% of them trucks, projected to reach 312 by 2033. The structure is 101 ft (30.8 m) long and 30 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesSW 29th ST
CrossesSalt Creek (t 177)
Location.7SW of Sprague
RouteCounty Highway 17
CountyLancaster County
StateNebraska
Coordinates40.6161, -96.7626
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating14.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span100 ft (30.5 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic186 (2016)
Projected traffic312 by 2033
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SW 29th ST over Salt Creek (t 177) built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1977.

What condition is SW 29th ST over Salt Creek (t 177) 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 2023.

How much traffic does SW 29th ST over Salt Creek (t 177) carry?

About 186 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is SW 29th ST over Salt Creek (t 177)?

The structure is 101 ft (30.8 m) long with a longest span of 100 ft (30.5 m) and a deck 30 ft wide.

Who owns SW 29th ST over Salt Creek (t 177)?

It is owned by the County Highway Agency.