US Bridges

Richardson Highway over Castner Creek

Poor

Southeast Fairbanks Census Area, Alaska · Mile Point 219.9 · Structure no. 0583

Built
1958
67 years old
Condition
Poor
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
153 ft
3 main spans
Daily traffic
280
2020 count
Owner
State
State Highway Agency

About this bridge

Richardson Highway over Castner Creek is a steel continuous stringer/multi-beam or girder carrying Richardson Highway over Castner Creek in Southeast Fairbanks Census Area, Alaska. It was built in 1958, so it is 67 years old, older than the Alaska average of 35.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 280 vehicles a day, roughly 21% of them trucks, projected to reach 330 by 2039. The structure is 153 ft (46.6 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesRichardson Highway
CrossesCastner Creek
LocationMile Point 219.9
RouteState Highway 71
StateAlaska
Coordinates63.40278, -145.73528
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating58.6 US tons
Inventory rating27 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length153 ft (46.6 m)
Longest span59 ft (18 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic280 (2020)
Projected traffic330 by 2039
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Richardson Highway over Castner Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Richardson Highway over Castner Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does Richardson Highway over Castner Creek carry?

About 280 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is Richardson Highway over Castner Creek?

The structure is 153 ft (46.6 m) long with a longest span of 59 ft (18 m) and a deck 26 ft wide.

Who owns Richardson Highway over Castner Creek?

It is owned by the State Highway Agency.