US Bridges

28th ST S over Millrace

Fair

Lane County, Oregon · 0088 MI S HWY 126 · Structure no. 39C101101000068

Built
1978
47 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
102 ft
3 main spans
Daily traffic
365
2020 count
Owner
County
County Highway Agency

About this bridge

28th ST S over Millrace is a prestressed concrete slab carrying 28th ST S over Millrace in Lane County, Oregon. It was built in 1978, so it is 47 years old, younger than the Oregon average of 49.9 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 365 vehicles a day, roughly 10% of them trucks, projected to reach 430 by 2025. The structure is 102 ft (31.1 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Carries28th ST S
CrossesMillrace
Location0088 MI S HWY 126
RouteCounty Highway C1010
StateOregon
Coordinates44.03614, -122.98721
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span34 ft (10.4 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic365 (2020)
Projected traffic430 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 28th ST S over Millrace built?

It was built in 1978, making it 47 years old in 2025.

What condition is 28th ST S over Millrace 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 August 2024.

How much traffic does 28th ST S over Millrace carry?

About 365 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 28th ST S over Millrace?

The structure is 102 ft (31.1 m) long with a longest span of 34 ft (10.4 m) and a deck 28 ft wide.

Who owns 28th ST S over Millrace?

It is owned by the County Highway Agency.