US Bridges

CR 257 over North San Gabriel River

Good

Williamson County, Texas · 0.15 MI S of FM 3405 · Structure no. 142460AA0151001

Built
1990
35 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
4 main spans
Daily traffic
204
2020 count
Owner
County
County Highway Agency

About this bridge

CR 257 over North San Gabriel River is a prestressed concrete stringer/multi-beam or girder carrying CR 257 over North San Gabriel River in Williamson County, Texas. It was built in 1990, so it is 35 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 204 vehicles a day, projected to reach 200 by 2030. The structure is 180 ft (54.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 257
CrossesNorth San Gabriel River
Location0.15 MI S of FM 3405
RouteCounty Highway 257
CountyWilliamson County
StateTexas
Coordinates30.69873, -97.86969
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
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, precast panels
Main spans4
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span45 ft (13.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic204 (2020)
Projected traffic200 by 2030
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$379,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 257 over North San Gabriel River built?

It was built in 1990, making it 35 years old in 2025.

What condition is CR 257 over North San Gabriel River 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 2023.

How much traffic does CR 257 over North San Gabriel River carry?

About 204 vehicles per day (2020 count).

How long is CR 257 over North San Gabriel River?

The structure is 180 ft (54.9 m) long with a longest span of 45 ft (13.7 m) and a deck 28 ft wide.

Who owns CR 257 over North San Gabriel River?

It is owned by the County Highway Agency.