US Bridges

RM 620 over Chisolm Trail & UPRR

Good

Williamson County, Texas · 0.11 MI NW of IH 35 · Structure no. 142460068301489

Built
2023
2 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
489 ft
5 main spans
Daily traffic
42,344
2021 count
Owner
State
State Highway Agency

About this bridge

RM 620 over Chisolm Trail & UPRR is a prestressed concrete stringer/multi-beam or girder carrying RM 620 over Chisolm Trail & UPRR in Williamson County, Texas. It was built in 2023, so it is 2 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 42,344 vehicles a day, roughly 5% of them trucks, projected to reach 59,282 by 2041. The structure is 489 ft (149 m) long and 72 ft wide.

Location

Open in Google Maps
CarriesRM 620
CrossesChisolm Trail & UPRR
Location0.11 MI NW of IH 35
RouteState Highway 620
CountyWilliamson County
StateTexas
Coordinates30.51124, -97.68946
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length489 ft (149 m)
Longest span110 ft (33.5 m)
Deck width72 ft (21.9 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,344 (2021)
Projected traffic59,282 by 2041
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was RM 620 over Chisolm Trail & UPRR built?

It was built in 2023, making it 2 years old in 2025.

What condition is RM 620 over Chisolm Trail & UPRR 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 April 2023.

How much traffic does RM 620 over Chisolm Trail & UPRR carry?

About 42,344 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is RM 620 over Chisolm Trail & UPRR?

The structure is 489 ft (149 m) long with a longest span of 110 ft (33.5 m) and a deck 72 ft wide.

Who owns RM 620 over Chisolm Trail & UPRR?

It is owned by the State Highway Agency.